34. If the different permutations of all the letter of the word EXAMINATION arelisted as in a dictionary, how many words are there in this list before the firstword starting with E ?

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    Answered by

    Payal Gupta | Contributor-Level 10

    4 months ago

    34. In the eleven-letter word EXAMINATION there are 2A's, 2I's and 2N's and the rest are all different.

    Since in a dictionary the words are listed according to the English alphabet we can only find words starting with A (as B, C, D are not a part of the letters forming the word EXAMINATION) listed before E.

    Hence after fixing one A as first word we can rearrange the remaining 10 letters of which 2 are I, 2 are N and rest are all different.

    Therefore, the required number of ways = 10!2! 2!

    = 10 * 9 * 8 * 7 * 6 * 5 * 2 * 3

    = 9,07,200

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