JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2013

  • question_answer
        In how many ways can mn letters be posted in n letter boxes?

    A)  \[{{(mn)}^{n}}\]             

    B)  \[{{m}^{mn}}\]

    C)  \[{{n}^{mn}}\]

    D)  None of the above

    Correct Answer: C

    Solution :

                    We have, required number of ways are\[{{n}^{mn}}\]. Since, each letter may be posted in n ways.


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