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Question

Consider the word PERMUTATION. How many permutations can be made such that all the vowels and consonants are alternate?

A
7!2!
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B
5!×6!2!
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C
5!×6!
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D
none of these
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Solution

The correct option is B 5!×6!2!

PERMUTATION
6 Consonants 5 Vowels
6 odd places 5 even places
Number of ways of arranging alternately
=6!2!×5!=6!×5!2!

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