GMAT test strategies
Posted on
09
Jul 2020

8 GMAT Test Strategies To Help Boost Your Score

by ApexGMAT

Contributor: Ivan Minchev

June 22st, 2020

More than 250,000 students take the GMAT every year as a requirement to get into the thousands of different MBA, EMBA, MFin, MAcct and Management PhD programs worldwide. However, due to the complexity of the exam as well as its adaptive difficulty only the top 12% of test-takers manage to score 700 or above. Here are 8 GMAT test strategies you can utilize to achieve a higher score on the exam, no matter where you currently are on your GMAT preparation journey.

1. Adopting the proper mindset

Perspective  is everything. It is very important to understand that even though getting in the top 10% of test-takers might seem like a spectacular achievement (and don’t get me wrong, it certainly is) setting your goals on a certain score tends to be counterproductive. Instead, focus on attaining specific skills, knowledge, and command, and the score will follow. Goals lead to expectations and fear of failure, and fear of failure in turn results in stress, which can greatly hinder performance.

2. Overcoming stress!

Stress and fear can greatly influence your results, but there are ways to manage these very normal responses to a high stakes situation. One of the ways to reduce stress and boost your confidence is by beginning your preparation process as early as possible – ideally 90-120 days before the exam. This provides enough time to fully grasp the complexities of the exam, and more importantly internalize a new set of skills to handle that complexity.

A test taker’s greatest enemy is test anxiety. Understand that anxiety happens to everyone. What sets top performers apart is how they handle that anxiety, and how they direct it back into their performance. Many people use a variety of relaxation techniques for dealing with test anxiety. The most common and easy to use method is to practice deep and controlled breathing in combination with visualization techniques. 

3. For exam day…

Are you a coffee drinker? Surprisingly, caffeine can really help your performance on test day. Caffeine is a powerful nootropic that will help keep your senses sharp and will also boost the oxygenated blood flow to your brain, subsequently enhancing your performance. For more info on how coffee affects your performance click here

Remember how we said that it’s important to begin your exam prep early? This “early bird” attitude can be applied in more ways than one. What this implies is that you must (not might, not should) prepare your GMAT Test Day Survival Kit on the previous day and not leave this for the last moment. Everyone has waited for the last minute to do something, and chances are everyone has left something crucial behind. With the GMAT being such an important exam such situations should be avoided as much as possible. Try having a mock exam day. Map out the whole test day and practice it as if it were real, including your trip to the testing center. This will help you normalize the process and alleviate anxiety on test day.

4. Value your time and manage it efficiently!

Since the GMAT is a timed exam one’s planning and strategic skills are put to the test as they have to come up with an efficient time management strategy.

Use mental math tools whenever possible and also try getting used to reading and analyzing charts, graphs and tables efficiently for the Integrated Reasoning section. 

Once you’re further along in your preparation and have mastered seeing multiple solution paths before engaging any of them, familiarize yourself with common problems, and built up test reading and perspective skills, then you can begin dedicating yourself to timed sets: working on a cluster of 10 consecutive questions for each section of the exam when on the clock. This helps you calibrate your timing decisions and more readily notice when they require adjustment.

Remember, just because the GMAT is a timed exam, this doesn’t mean we must learn under a time constraint. Like good cooking, good learning takes time. Give yourself sufficient time to learn, while also making sure the learning time is spent as productively as possible.

5. The Integrated Reasoning section

Dealing with 12 multi-part questions in 30 minutes means that you’re going to be overwhelmed with information, and you won’t have much time to spare. Sorting through large amounts of data and understanding it in a timely manner is key to getting through this section.

A good way to rapidly identify information needed to solve a problem is knowing what to look for. Read the problems carefully (and this applies to all sections) and proactively determine what you want out of the information or solution path. This way, you will sift out most unnecessary information in advance, saving plenty of time along the way. However, this does NOT mean to ignore the text written around the tables/graphs/charts.

6. The Analytical Writing section 

Failing to plan is planning to fail! Always plan your essay! Set aside 4-5 minutes to plan what you are going to write and how you are going to structure your essay. 

Create an essay template in advance! There are many ways you can go about making one but usually, the more you practice your essay writing skills the more used to a specific writing style you are going to get ultimately resulting in your own template.

7. Ask for help

There is nothing embarrassing about asking for help, especially when it comes to an exam that is so vital to one’s future. There are numerous GMAT forums and courses on the web, where you can ask and get help from people who have already taken it.

However, if you would prefer a more personal and individualized approach you could consider hiring a private tutor. The benefit of not preparing alone but hiring a tutor is that it allows for direct feedback on what are an individual’s strengths and what needs improvement, while also receiving advice on how to achieve those improvements. As a result, when the exam day comes you will not only be well prepared but will also know it, having built up confidence in your abilities.

8. Practice, practice, practice!

No doubt you’re familiar with the phrase “practice makes perfect.” There is a reason why this is such a popular saying: it’s true! Not all practice is equal, though. Varied practice that aims at building on existing skills and knowledge is much more high yielding than repetition. No matter how clever you are, no matter how good of a student you’ve been or how proficient in math you are if you do not put enough time and effort in your prep you are not likely to be happy with the end result. Even the top tutors and courses out there won’t be able to help you out if you don’t give your best. So remember, don’t just go through the motions, but practice by constantly looking at the same problems and concepts in new ways, and trying to use them in novel situations, and you’ll find your GMAT prep vastly accelerated.

That was the list of 8 strategies to help you score high on the GMAT. Keep in mind that what works for one person will not necessarily work for another as everybody learns differently. It is only through practice and proactive learning that you will be able to find what are the best methods for your success. 

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Posted on
11
Jun 2020

Snack Shop GMAT Problem

The Snack shop GMAT problem is an average or a mean problem. A characteristic of many average problems is that one big takeaway right at the outset is that the answer choices are clustered tightly together. We want to refrain from making any calculations.

The problem is below:

snack shop problem

Selecting A Solution Path

If they’re looking for a level of precision, the estimation solution path isn’t available to us. If we dive into the problem, right from the first sentence we have sort of a conclusion that we can create via either a graphic or accounting solution path.

If you were the business owner immediately you’d say to yourself: Well for 10 days and an average of $400 a day I made $4000. 

This is how we want to think about averages. Many times they’ll tell us a parameter about a length of time or over a certain universe of instances and here we want to treat them all as equal.

Solving the Problem

It doesn’t matter if one day we made 420 and another day we made 380. We can treat them in aggregate as all equal and start out with that assumption. That’s a very useful assumption to make on average problems. So, we start out knowing that we made 4,000. 

What I want us to do is do a little pivot and notice from a running count standpoint how much above or below we are on a given day. So we’re told that for the first six days we averaged $360 which means each of those six days we’re short $40 from our average. That means in aggregate we’re short $240. 6 days times $40 –  and this has to be made up in the last 4 days.

Notice how we’re driving this problem with the story rather than with an equation. In the last four days we need to outperform our 400 by 240. 240 divided by 4 is 60. 60 on top of the 400 target 

that we already have is 460. Therefore, our answer is D.

Graphical Solution Path

If we are more comfortable with graphic solution paths, imagine this in terms of 10 bars each representing $400. Lowering six of those bars down by 40 and taking the amount that we push those first six down and distributing it among the last four bars gives us our $460 total per day.

snack shop graphic solution path

If you enjoyed this Snack Shop GMAT Problem, watch “The Gas Mileage GMAT Problem” next.

 

 

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Posted on
28
May 2020

Gas Mileage GMAT Problem

The Gas Mileage problem is a classic example of the GMAT triggering one of our DSM’s: Our Default Solving Mechanisms for applied math. Yet there are three higher level solution paths that we can engage instead. So we are going to skip the math entirely on this one. In reading the question stimulus, there’s a signal that estimation is going to be a very strong and viable solution path and in fact for most folks estimation is the dominant solution path for this problem.

What to Take Note Of

Notice in the first sentence here that we are given the relationship between the efficiency for Car X and the efficiency for Car Y. When comparing 25 to 11.9, 11.9 is a little bit less than half. Whenever we have a relationship that is a little less or a little more than a factor, that’s a clear signal that the GMAT wants us to estimate.

Now, we have an inverse relationship here, between the efficiency of Cars X and Y and the amount of gas they use. So if Car Y is using a little half or rather if Car Y has a little less than half efficiency it’s going to use a little more than double the amount of gas. Managing the directionality of estimation is essential to make full use of this solution path.

Estimation Solution Path

Right off the bat, we have a sense that Car Y is going to use a little bit more than double the amount of gas. Now, all we need to do is figure out how much Car X will use. This is an exercise in mental math. Instead of dividing the 12,000 miles by 25 we want to build up from the 25 to 12,000.

Ask ourselves, in a scenario type of way, how many 25’s go into 100 – The answer is 4. 4 quarters to a $1. Then we can scale it up just by throwing some zeros on. So, 40 25’s are 1,000. How do we get from 1,000 to 12,000? We multiply by 12. So 40 times 12, 480 25’s gives us our 12,000 miles. Car X uses 480 gallons.

Therefore, Car Y is going to use a little more than double this and we point to answer C because we just need to answer the amount Y uses in addition to X. SO there is a bit of verbal play there that we also have to recognize. That’s the estimation solution path.

Graphical Solution Path

We can see this via the graphic solution path by imaging a rectangle, where we have the efficiency of the engine on one side and the amount of gallons on the other. With Car X, 25 miles per gallon time 480 gallons is going to give us the area of 12,000 miles. That is we’ve driven the 12,000 miles in that rectangle. If we are cutting it in half on efficiency, or a little more than half, we end up with two strips and if we lay them side by side we see that we’re doubling of going a little more than double on the amount of gas that we use to maintain that 12,000 mile area.

Logical Solution Path

Finally, we can look at this from a logical solution path which overlaps a bit with the estimation. But the moment we know that Y uses a little more than double the amount of gas of X, we can also look at and not manage that directionality and just say it uses about double. The only answer choice among our answer choices that is close but not exactly, is C – 520. 480 is our exact number and the A answer is way too low. It’s not close enough to 480 to be viable. So here is an example where, while best practices have us managing the directionality, we don’t even need to do that.

Similar Problems

For similar problems like this take a look at the Wholesale Tool problem, The Glucose Solution Problem and for a really good treatment of the graphic solution path check out Don’s Repair Job. There should be links to all three right below and I hope that this helps you guys on your way to achieving success on the GMAT.

If you enjoyed this Gas Mileage Problem but would like to watch more videos about Meta strategy, try “How coffee affects your GMAT performance“.

 

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Posted on
19
May 2020

GMAT Scoring – Demystified

One of the most common questions asked by those who are new to the GMAT is how exactly does the computer adaptive test or CAT work? The long and short of it is that if you get a problem correct, they give you a harder one, if you get a problem incorrect, they give you an easier one. By doing this the GMAT is able to bounce up and down and calibrate to your skill level.

Should You Spend more time on the first 10 questions?

A few things come out of this including questions about how to spend your time. Whether certain questions are weighted more than others, whether your timing, that is the amount of time you spend on a problem factors into the score.

To start, there’s a common misconception that you should spend more time on the first 10 questions because they tend to adjust your level for the computer adaptive test at a greater rate. While that’s true in the sense that the computer adapted model on the GMAT does influence it more at the outset, whether you should spend more time is actually a more complex question because generally the GMAT is going to give you problems that are about average and build up or down from that average.

Planning To Score An Elite GMAT Score

If you’re planning on performing at a top level, at an elite level, if your goal is 700 or even 600, you need to assume that those early problems that are average level problems you’re going to do well and in a timely manner anyway.

That is spending extra time to ensure you get them correct is a grandiose version of spending extra time to make sure that you’re getting two plus two correct. You wouldn’t check that because you’re confident enough in your skills and if you’re in the GMAT and you’re getting ready to shoot for a 700 you should already be confident enough in your skills not to have to spend extra time on average level problems. To take these problems on a problem-by-problem basis rather than with blanket statements.

Does The Test keep Track of Other Information?

A common question is whether or not the test keeps track of the type of problems you do. This can refer to:

    • subject matter
    • problem solving versus data sufficiency 
    • reading comprehension versus critical reasoning versus sentence correction

However, we can still go about it with the core rule: if you get it right you’re going to see something more challenging, get it wrong, less challenging. We tend to believe that they don’t keep a great track of that but really rely upon the bouncing up and down to calibrate you to your average performance level. You don’t want to sweat any single problem or worry about any single problem type in regards to the Computer Adaptive Test.

Certainly,  sometimes you’ll know that certain types of problems require more or less attention from you or that you make common errors on those problems. However, that’s not a CAT thing, that’s just a general GMAT thing. 

You are penalized for spending too much time on a problem but not in the way you think.

The other big question we hear a lot is whether or not the amount of time you take on a problem factors into the score. The answer here is subtle, it’s yes and no. No in the sense that the GMAT scoring algorithm does not track the amount of time that you spend on a problem. But, yes in the sense that the more time you spend on problems the less time you have for other problems. In particular, if you’re scoring above average, you’re on this ascendant curve so that the difficult problems at the end require more time than the less challenging problems at the beginning.

Therefore, if the GMAT kept track of your time and penalized you for spending longer on problems they would actually be penalizing you twice and this gets us into our timing decisions and the trade-off between time and score.

Time and Score Trade-off

When you’re armed with confidence and knowledge about how something works you don’t have to worry about how it works or how what you’re doing affects how it works and you can focus on the task at hand. 

The more that you can offload the burden of worrying about the scoring and the mechanisms by which the GMAT measures you, the more success you will find. As always, I hope this helps and keep prepping!

If you enjoyed GMAT Scoring Demystified, watch The Effects Of Coffee On GMAT Performance.

 

 

 

 

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Posted on
30
Apr 2020

Why A 4.0 Does Not Equal GMAT Success

You’ve always been a high achiever, always excelled at school, at extracurriculars and in your profession. 4.0, valedictorian, top of your department and yet the GMAT put you on your ass. This is surprisingly much more common than you might think. The big secret is that no one talks about getting help.

Everyone Is Asking for Help

For many professionals, this is the first time in their academic or a professional career where they’ve needed to ask for help or engage a tutor. If you are at one of this top consulting finance banking firms you don’t want to ask around say: “Oh I need help with this.” That shows weakness. One of the big secrets is if you’re in a noteworthy profession everyone is asking for help, but no one is talking about it.

The GMAT is designed like many other psychometric exams. Unlike the SAT where everyone and their brother and sister are taking it, the GMAT is taken by a self-selected cohort. That tends to be strong achievers coming from the best schools, the best professional firms in banking and finance.

What the GMAT is Testing?

The GMAT needs a way to differentiate among a lot of very smart, very high achieving individuals. The way it does this is by testing your creative and your critical thinking skills. They want to see how flexible you are with the base knowledge that was instilled in you in elementary, middle, and high school. They are not testing whether or not you can multiply fractions or parse a sentence, but rather how well you can manipulate things on the fly.

To some extent, you can prepare and be familiar with the most common types of problems. Ultimately, as an adaptive exam the GMAT will put you in a place where you’re uncomfortable. Where you’re not sure what’s going on with the problem. And it is this navigation that people who have done well at school tend to not do as well with. Let’s explore why.

Why 4.0 Does Not Equal GMAT Success?

School (for better or worse) is a reactive environment. You’re given information and expected to spit it back or manipulate it a little bit and spit it back. But there are guardrails up there – kind of like bowling with those balloon tubes. It’s very hard to get too off-center because there’s always a teacher or element of feedback or grade, that redirects you towards what you are supposed to be doing. Consequently, you are rewarded for following directions and are also robbed of the experience of failing heavily or not doing what’s asked. As such, you don’t get the experience of solving problems when you are significantly lost. And this is what the GMAT is testing.

So, often high achievers in academic environments tend to struggle because their study skills tend to level off somewhere around mid-600s on the GMAT. Whereas those students who maybe weren’t as strong, went their own way or tended to be more creative, more artsy tend to react to the GMAT like a fish in water. All of a sudden, the things that didn’t allow them to succeed academically, now become tremendous assets.

What To Do About It

So, first things first, don’t worry. This is an opportunity to capture new skills and grow as an individual. At a deeper level what I would suggest you internalize is the idea that what you’ve been doing for success up until now no longer works. That is a scary prospect. Especially when the carrot has always been a few feet in front of your face and you’ve consistently caught the carrot.

So, this represents psychologically, emotionally, a major shift in how you need to deal with achievement. This is highly uncomfortable for a lot of people. It requires a lot of hard work. The opiates that you’ve been using in terms of solution paths that have always worked for you all of the sudden are like an addiction that you need to break.

Unlearn Old Habits

The hardest part of our job as GMAT instructors isn’t so much showing you the new things that you need to do or teaching you new ways of doing things. Rather, in helping you dehabituate, unlearn those things that have become so embedded that they are natural. The upside of this is that when someone does so they become much more flexible intellectually. And are that much more prepared to really excel and take to heart the things they learn in business school and professionally and beyond.

If you have always been an achiever and have been stopped in your tracks by the GMAT, don’t worry, give us a call. Let us learn a bit about you and speak to exactly what it is that you might be doing that’s working against you and also what you might adjust in order to excel rapidly. That is really the silver lining here. If you are really good at achieving or working within frameworks, once you adopt a new framework, the acceleration of GMAT success often happens rapidly. To the extent that we can call this a profile, this profile is one of our favorites to work with because we tend to get really, really strong results. Most of the time, over 700.

Wishing you guys the best of luck. Give us a call. Hope you’ve enjoyed this video and we look forward to speaking with you soon.

I you enjoyed: Why A 4.0 Does Not Equal GMAT Success, watch Will GMAT videos help improve my score?

 

 

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Posted on
17
Apr 2020

The Online GMAT Part 2: Updates & Testing Experience

Mike from Apex GMAT is here to give you part two on our update about the online GMAT exam that’s being rolled out in response to the Covid-19 crisis.

The Exam Overview

This exam is designed to be a standalone, separate exam that’s done in the test centers. While there are going to be many similarities there are also a few key differences that you should know about. If you haven’t done so already I’d encourage you to check out part one of our video. It has a lot of key details about the exam.

Test Scheduling

When it comes to scheduling the exam unfortunately it seems that you can’t take an appointment that you have for a live test center and convert it to an online appointment. I’m not entirely sure why this is but due to pricing differentials, scheduling differentials, your online exam has to be a separate enrollment. Your live exam can still be rescheduled for a time when a test center opens.

Take it 24/7

One of the benefits of the online exam is that you can schedule to take it 24/7. It’s going to operate around the globe so there’s no middle-of-the-night blackout time. You can do it at that time of the day that you feel most pumped for the GMAT. This is really great because many times were forced into a time slot either because availability or just because you might be a night owl and the testing center closes at 5:00pm. So this is a real advantage for people who feel on at all hours.

Setup & Proctoring

There are several key things that are going to take place in the setup and proctoring of the exam for security purposes that you should be aware of. First off, there’s going to be a live proctor watching you during the exam. They’ll be able to see you and listen to you during the entirety of the exam. If you have a problem, if you have questions you can both buzz them in a chat or raise your hand and they’ll come on camera live. If you’re having a connection issue or there’s some technical glitch the GMAC is pledged to be fair and not take off time from your exam. However, if you’re raising your hand for the proctor for something that wasn’t an issue, your time, your clock doesn’t stop. So in that sense it’s just like the live GMAT.

Technical Issues

If there’s a major technical issue retakes are available but that’s really going to be something that’s subject to the judgment of the GMAC. We would expect that their system works very well and that the need for a true retake is going to be very rare. Coinciding with this you’re only going to be able to take the online GMAT one time. You won’t get your score immediately but rather sometime within about seven days. It’s a score that can’t be canceled because the online GMAT is designed to only be taken once.

So it’s really more of an emergency measure where people who need to take the GMAT to get an application out should be able to do so. But those same people shouldn’t be able to cancel their score because this is their their ultimate attempt. That being said, there’s nothing stopping you from taking additional GMATs once the live appointments become available. Do be careful here, because it can lock you into a score that you might not want.

Exam Check-In

The check-in procedure for the exam is somewhat involved. It’s done live with a proctor and it takes 10 to 15 minutes. What they’re going to have you do is take a selfie, upload a photo or a snapshot of your photo ID. Then they’re actually going to have you walk around the room. Show them the corners, show them that your desk is clear without any papers on it. Show them the door to the room to ensure that there’s no one in the room. For the duration of the exam, including the breaks, you won’t be permitted to leave the room.

Exam Section Order

The online GMAT has a predetermined order of sections. So unlike the testing center version of the GMAT you won’t be able to pick and choose which sections you do first, second and so on. So after the check-in you’ll be immediately directed to the quantitative section, then the verbal, a five-minute break and then the integrated reasoning and then you’re done.

Scratch Paper

With respect to the scratch paper that we normally get in an appointment GMAT which is that dry erase sort of stuff – on the online GMAT you won’t be permitted to write as we understand it. There’ll be an online calculator for the integrated reasoning section just like on the normal GMAT and then you’ll have a white board that should be some sort of adjustable screen window that you can scribble on and you should be able to move it around the screen for your convenience during the exam.

And this is something that we’re mildly concerned about and you know we have this saying here, “if you’re doing math you’re, doing something wrong.” That said having scratch paper and the comfort of physical pen and paper is something that a lot of people rely upon so keep this in mind as you get ready to take the online GMAT.

Extra Time On The Exam

Finally, for those of you who have an accommodation of extra time from the exam, the online GMAT isn’t available now but they expect that functionality to roll out in mid-may both for time and a half and double time and that also includes an extended break instead of five minutes going to ten minutes in between the verbal and the integrated reasoning.

Check Pearson Vue’s video about the testing experience.

Thanks so much for watching, email us with any questions. We’re here to help during this time and stay safe and healthy out there.

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Posted on
16
Apr 2020

Online GMAT Exam

Hi guys. Mike here from Apex GMAT, bringing you the latest on the online GMAT exam. The GMAC just announced that they’re rolling out the online GMAT.

When can you take the Exam?

The earliest appointments that are available are April 20th and appointments extend all the way to June 15th. You should be able to log on right now to secure your appointment. All the links you need are below this video for understanding all the rules and everything else that are going to be governing the online exam. But I’m here to bring you what we know. I’ll be here again tomorrow after we have our call with the GMAC to give you additional details and context.

Key Information About the Exam

Most computers and most high speed interconnect internet connections should be fine for taking the GMAT online. You will need either a PC or Mac and Windows 8.1 or 10 or Mac OS 10 point 13 or above. Windows 7 will not work and unfortunately for you hackers and private people of the world Linux and UNIX OS’s will not work.

There are some additional specifications that you need to be aware of. Number one is that you can’t connect over a VPN and a lot of firewalls might disrupt the connection. There will be a protocol for the GMAC to test your connection before you take the exam but if you’re connecting through a work computer you may run into some issues. Similarly, due to the security protocol you won’t be able to have a second monitor hooked up and you’re going to need a webcam that’s operating at least 10 frames per second as well as an internet connection that is at least 1 Mbps.

In addition to this there will probably be some additional protocols where you need to check in because they’re using online proctor’s to actively monitor your taking of the exam and this means unfortunately that a few countries because of data and privacy laws will not be able to take advantage of the online GMAT which include China, North Korea, Sudan, Iran, Cuba and Slovenia. So if you’re in one of those countries unfortunately you can’t take the online GMAT exam.

The cost for the online GMAT is two hundred dollars ($200) and you should also be able to use an existing registration to make a new appointment for the online GMAT.

Format of the Exam

Format wise it’s going to be almost exactly the same with the exception of the writing section. There won’t be one so for those of you who have stamina issues on the GMAT the good news is that the exam will be a half hour shorter. For those of you who have experienced GMAT anxiety which I talked about with several other videos one of the nicest things about the online exam is that you’ll be able to take it in the comfort of your own home or your own space. Doing so is going to offer some significant benefits but also a few liabilities because you’re much more prone to be distracted when you’re in your own space.

So one of the things I would certainly recommend is preparing to sit the exam like you were going to sit at a testing center that means sitting up straight. Ensuring that you have as much quiet as possible, earplugs should be available to you and you should have clothes on (you know, no pajama pants). Dress as if you were taking the exam, wear shoes because these things will put you in a good headspace to be attentive in taking the exam seriously.

Taking the Exam with a Disability

For those of you with disabilities the accommodations for disabilities are not yet installed in the online GMAT exam so they expect those to be available by mid May.

Scoring

In terms of getting your score right now they expect that the score should be available within a week of taking the exam. I don’t know if that means that they’re going to be recalibrating the exam for any bumps or dips they see in the different format or because the exam is shorter or if they’re going to offer something much more immediately like on the real GMAT but give it an extra level of supervision before they make it official. That’s something that we should have more information for you on tomorrow.

Additional Information and Help

All the pertinent information you guys need about the online exam are in the links below including the ability to register for the GMAT’s online webinar and Friday the 17th where you can have additional questions answered. Thanks so much for watching, stay safe and healthy and I wish you all the best in your online GMAT. Of course if you need us for anything you can email questions to us at this address [email protected]

 

Update: Get more information about the online GMAT in this follow up video: Online GMAT Update.

 

 

 

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Posted on
16
Apr 2020

Combinatorics GMAT Problem: Movie Night

Today we’ve got a fairly straightforward GMAT combinatorics problem. If you’ve been self-prepping in a rigorous, let me review the rules sort of way, you’ll pick up that there’s orders, combinations here and you might be inclined to really dive in. What’s my combinations formula? What’s my permutation formula? How do I know which is which? Then plug in numbers.

While that will get you there understand that most GMAT combinatorics problems are more about being familiar with combinatorics than any really heavy duty math. That is because the number of people who are taking the GMAT are generally more familiar with Algebra or Geometry.

Combinatorics & The GMAT

Combinatorics, by virtue of being less known, is considered more valuable. It is scored more highly than problems of similar complexity in Algebra or Geometry. So you’re really being rewarded just for knowing basic combinatorics and in fact most permutation/combination problems fall into this basic category. The good news here is that you can use your reasoning to solve this problem without being burdened by the formal combinatorics formulas.

Solving The Problem

Let’s take a look at this problem. John’s having a movie night. We need to ask ourselves a series of pivot questions. How many different movies can John show first?

Well there’s 12 movies, he could show any of the 12. Leaving 11 movies to be shown second, any of 11. 10, 9. So the answer is 12x11x10x9 or 11,880. But even this math is a lot to do. Notice that by walking it through as a story, as a narrative, we don’t need to cancel out the 7 6 5 4 3 2 1. We don’t need to worry about division or anything else. We just know that there’s 4 movies and each time, each step we take, there’s one less movie available. Here we have this product 12 times 11 times 10 times 9, but we don’t really want to be forced to process this and so we can look for features that allow us to skip doing that heavy math.

Transforming The Numbers

We’ve got this really neat triangular shape in the answer choices where each answer has a different number of digits in it. 12, 11, 10, 9, we can look at and say on average each one’s about 10. The 9 and the 12 sort of compensate, but overall we’re going to have something that’s close to 10 times 10 times 10 times 10.

That is our answer should be somewhere around 10,000 or possibly a little more because we have an 11 and a 12 offset only by a 9. So what we’re looking for is something in that just above 10,000 range this prevents us from doing the math and very rapidly lets us look at those four movies, those numbers 12 11 10 9 and zero in on that 11 880 number.

Problem Form

Try it again with a similar number. Notice that you can’t do this with a hundred different movies selecting 17 of them. The math, the numbers would be too cumbersome.

The GMAT is really restricted here and you should restrict yourself to ones that are reasonable to keep processed in your head without doing heavy duty math. Similarly, notice how this one clusters around ten, it doesn’t have to cluster around ten, but when you’re rewriting this problem think about that clustering and think about how your knowledge of common powers or how other identities can help you rapidly get to an answer because the GMAT will present you with numbers that have a neat clean way to jump from your understanding directly to the answer without all that messy math in between.

This is Mike for Apex GMAT with your problem of the day.

If you enjoyed this combinatorics GMAT problem, try more GMAT practice problems:  Remainder Number Theory 

 

 

 

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Mar 2020

How COVID-19 Is Affecting The GMAT And Its Test Takers

Mike is here with a special update video about how the COVID-19 is impacting the GMAT testing world. I wanted to share some big news with you guys from the GMAC, the makers of the GMAT, about a substitute exam that they will be using and that you should be able to take from home starting in the middle of April.

General Inquiries

So, first off, a lot of people are finding themselves in uncertainty about their application process and about their GMAT preparation. To be sure, we have been getting a lot of calls about people wanting to make the best use of their time while they are furloughed from work, or while they are working from home and have a bit more flexibility and to be sure it’s an opportune time to bite off this task which for most people is really hard to fit into their existing professional and personal lives.

Additionally, we have a lot of inquiries about what’s going to happen with admissions. We can’t speak for any particular schools, however, we expect that the window of the virus crisis is such that it won’t meaningfully impact applications for Fall of 2021, that is that by the time your first round comes around in September or October, you are going to be able to get in, take the GMAT as normal and be able to apply and go to other events.

That of course is the hope and this is an emerging phenomenon, and emerging circumstance on the world stage without much precedence. So of course things are bound to change and we promise to keep you updated through the entirety of this crisis.

The New Exam

The new exam that the GMAC is rolling out will be taken from home and they are planning on rolling it out sometime in the middle of April. It will have three of the four GMAT sections, Integrated Reasoning, Quantitative and Verbal. So you will be able to get your score out of 800 with Quant and Verbal as well as your score for the Integrated Reasoning. The only section that will be missing is the writing section which I say is the least important of the entire GMAT from an admissions standpoint. The exam will be priced at a lower price point; they have not announced what that price point is but certainly at some discount to the normal $250 that’s charged.

Test Considerations

There are also some strategic considerations that come with this exam and some things we don’t yet know. For example, it is unclear as to whether you will get to choose the order of the sections when you take the exam or if it will be predetermined. Additionally, because the GMAC is likely using a different problem bank than they use for the actual GMAT, this makes some subtle time allocation and strategic guessing decisions change compared to the normal GMAT and I will be talking about that in another video.

If You Need Any Help Give Us A Call

I know that this is a stressful time for everyone who has business school and GMAT plans that have been disrupted. So if you need any help or need any advice, please feel free to visit our website: www.apexgmat.com.

You can contact us directly through there by chat, phone or email and from our entire family, we wish you health and safety in this difficult time and we’ll look forward to keeping you updated as soon as we have new information. Thanks so much and stay safe.

Watch other videos about COVID-19 and the GMAT: Here 

 

 

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Apex GMAT Must Have GMAT Study Tips

GMAT Tips

  1. If you’re doing math, you’re doing something wrong.
  2. Sleep at least 8 hours a day.
  3. Consistency is more important than intensity when prepping for the GMAT.
  4. Memorize Data Sufficiency choices.
  5. Practice your mental math.
  6. Prep without the time constraint until you understand to topic/section, then add time constraints.
  7. Don’t prep for the GMAT using practice tests only.
  8. Study at least 10 hours a week.
  9. Take a break from studying the day before the test and just relax.
  10. Visit the testing center prior to your exam to alleviate the stress associated with being there on test day.
  11. Understand your mistakes.
  12. Feed your brain for success. Consistency read publications such as the Economist, Financial Times, Time Magazine etc.

To watch our instructors go in to detail about the most important GMAT tips watch: 6 Things GMAT Preppers Get Wrong