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Math Help - a counting problem

  1. #1
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    Exclamation a counting problem

    How many functions are there from the set {1,2,...,n} where n is a positive integer, to the set {0,1}

    Thank you

    ---------------------------------------
    in my opinion it should be 2^n
    is it true?
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  2. #2
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    Quote Originally Posted by Narek View Post
    How many functions are there from the set {1,2,...,n} where n is a positive integer, to the set {0,1}
    in my opinion it should be 2^n
    is it true?
    YES.
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