for the set X, with n elements; get the appropriate solution for:
a) sigma (|A|-1)2 sum over all A (subsets of X).
b) sigma 2|A|3|B| sum over all A,B (subsets of X).
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For a), you can use formulas (6a) and (6b) on this page.
i solved a) today afternoon. : )
dont u have any idea about b) ?
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