GRE Quant Ep 18: Combinations & Permutations

When we ask our students which topics they struggle with on the GRE quant section, combinations and permutations always comes near the top of the list. There's a good reason for this: the questions are tough. Thankfully, they make up a small number of questions in the GRE quant section, so they shouldn't make or break your score, but you'll need to know how to answer them to get the very top scores.

In this video, Harry -- a GMAT Ninja tutor -- will show you how to break these questions apart so you can understand what process you need to apply. He'll help you understand these problems so you can answer them quickly and accurately.

This is video #18 in our series of full-length GRE quant lessons. For updates on upcoming videos, please subscribe!

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Chapters:
00:00 Introduction
02:50 Question 1 - The order matters
08:47 Question 2 - The order does not matter
17:13 Question 3 - At least one
25:04 Question 4 - How many numbers
31:53 Question 5 - At least two
39:06 Question 6 - Reverse engineering the formula
47:43 Question 7 - Changing the notation