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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- February 28th 2013, 01:58 AM #1

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- February 28th 2013, 12:03 PM #2

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- February 28th 2013, 01:03 PM #3

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