GMATinsight wrote:
In how many ways can the letters of word "EDUCATION" be arranged such that all the vowels as well as all the Consonants always appear together?
A) 9!
B) 5!*4!
C) 5!*5!
D) 5!*4!*2!
E) 6!*4!
We need to determine the number of ways to arrange the letters of word "EDUCATION" such that all the vowels as well as all the consonants always appear together. We start by arranging the given word with vowels together with the consonants together.
[EUAIO] [DCTN]
We first see that there are 2 ways to arrange [EUAIO] and [DCTN]: [EUAIO] [DCTN], [DCTN] [EUAIO].
Next we must determine the number of arrangements for the letters in [EUAIO] and in [DCTN].
[EUAIO] can be arranged in 5! ways.
[DCTN] can be arranged in 4! ways.
Thus, the total number of ways to arrange the letters of word "EDUCATION" such that all the vowels as well as all the consonants always appear together is 5! x 4! x 2, or 5! x 4! x 2!.
Answer: D
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