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Math Help - "Counting problem"

  1. #1
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    "Counting problem"

    Q. How many subsets of a set with 100 elements have more than one element?

    Is my answer correct?

    Ans. 2^100 total subset, minus 101 subsets which are 100 subsets with 1 element and 1 element which is null.
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  2. #2
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    Hello, robocop_911!

    How many subsets of a set with 100 elements have more than one element?

    Is my answer correct?

    Ans: . 2^{100} total subsets,
    . . . . minus 100 subsets which have 1 element, and the null set.

    2^{100} - 101\quad\hdots Correct!

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