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    what is the number of subsets of set A

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    Without writing them all out, what is the number of subsets of set A = {tongue, ear, mouth, eye, nose, cheek, forehead, neck, shoulder}?

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    https://brainmass.com/math/analytic-geometry/number-subsets-set-426555

    Solution Preview

    Hello and thank you for posting your question to BrainMass!

    The number of choosing k items out of a list of n items with no importance to the order, that is {a,b} is the same as {b,a} is given by the binomial coefficient:

    C(k,n) = n!/[k! * (n-k!)]

    For example,
    Choosing k=1 item ...

    Solution Summary

    The number of subsets of set A = {tongue, ear, mouth, eye, nose, cheek, forehead, neck, shoulder} is ascertained.

    $2.19