Multiple Choice Questions on In how many different ways can the letters of the word BOOKLET be arranged such that B and T always ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

In how many different ways can the letters of the word BOOKLET be arranged such that B and T always ...........

Quantitative Aptitude ( CCS) Permutation & Combination
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    In how many different ways can the letters of the word BOOKLET be arranged such that B and T always come together?

    360

    Incorrect Answer

    720

    Correct Answer

    480

    Incorrect Answer

    5040

    Incorrect Answer
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    Explanation:

    Treat B and T as a single letter.
    Then the remaining letters (5 + 1 = 6) can be arranged in 6! ways. 
    Since, O is repeated twice, we have to divide by 2 and the B and T letters can be arranged in 2! ways. 
    Total no. of ways= 6!x2!/2 =720

    By: MIRZA SADDAM HUSSAIN
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