Permutation Combination 01 | Rearranging Letters | GMAT 600 Level Sample Question

Описание: Reordering letters of a word. Permutation problem solving question.

This sample GMAT Math question is a 600 level combinatorics problem solving question. The concept tested is to find the number of ways the letters of word can be rearranged after factoring in constraints that a certain type of letters should be grouped together. An elementary permutation question on rearragements and reordering objects.

Chapters:
00:15 - Decoding the question
00:26 - Solution

Question:
In how many ways can the letters of the word ABACUS be rearranged such that the vowels always appear together?

A. 6!/2!
B. 3! × 3!
C. 4!/2!
D. (4! × 3!)/2!
E. (3! × 3!)/2!

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