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JEE MATHEMATICS MCQ: PERMUTATIONS

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Application +4 | -1
The number of permutations by taking all letters and keeping the vowels of the word COMBINE in the odd places is
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Correct option: D
576
Option D (576) is correct because the vowels can be arranged in odd places in   4P3{\;^4}{P_3} ways and the remaining letters in 4! ways.

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