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JCECE Engineering JCECE Engineering Solved Paper-2015

  • question_answer
    Total number of words that can be formed using all letters of the word BRIJESH that neither begins with I nor ends with B is equal to

    A)  4920                                     

    B)  3720

    C)   3600                                    

    D)   4800

    Correct Answer: B

    Solution :

    Total number of words formed without any restriction\[=7!\] Total number of words beginning with\[I=6!\] Total number of words beginning with\[B=6!\] Total number of words beginning with \[I\] and ends with\[B=5!\] \[\therefore \]Required number of words\[=7!\,-6!\,-6!\,+5!\]                 \[=5040-2\times 720+120=3720\]


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