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Math Help - Letter in Letterboxes

  1. #1
    Junior Member
    Joined
    Aug 2010
    Posts
    57

    Letter in Letterboxes

    Hi,

    How many ways can 5 letters be posted in 10 letterboxes ?

    the answer in 10^5.

    But i am really confused with this.

    Can anybody help me solving this.

    Thanks
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  2. #2
    Junior Member
    Joined
    Aug 2010
    Posts
    57
    I got it !

    letter one can go in any of the 10 boxes, so 10 ways.

    And same goes for remaining 4 letters. so 10.10.10.10.10 = 10 ^5.
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