Aug 22, 2023 | Combinatorics, GMAT, Quant
What are combinations? Conceptually, the combinations task is easy to understand: it’s about the number of ways to select a subgroup from a whole group. As in the permutations task, the whole group is notated as n, and the subgroup is notated as r. The standard...
Aug 15, 2023 | Combinatorics, GMAT, Quant
Permutations are a type of combinatorics task that is often tested on the GMAT. In a permutations question, you are asked to find the number of ways to order a group of elements. The order of the elements matters in permutations questions, so the number of possible...
Aug 8, 2023 | Combinatorics, GMAT, Quant
What is an Ordering Task? Ordering tasks are a common type of question on the GMAT. In an ordering task, you are asked to determine the number of ways to order a set of objects. The number of ways to order n different objects is n!, or n factorial. The best way to...
Aug 1, 2023 | Combinatorics, GMAT, Quant
Every combinatorics question on the GMAT involves one or more of three fundamental combinatorics tasks: ordering, permutations, and combinations. This article will introduce the three tasks, and each of the three following articles will explain a task intuitively to...
Jul 18, 2023 | Data Insights, GMAT
Preparing for the GMAT exam requires a thorough understanding of the different question types, including the challenging Data Insights Questions. This article aims to provide you with techniques and strategies to excel in GMAT Focus Data Insights Section. By mastering...