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Permutation

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Question

The letters of the word COCHIN are permuted and all the permutations are arranged in alphabetical order as in English dictionary. The number of words that appear before the word COCHIN is

A

360

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B

192

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C

96

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D

48

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Solution

The correct option is A $96$
Rank of $C O C H I N = (4!) 4 + 1 = 07 ∴$ Number of words $= 97 - 1 = 96$

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