hello..i need help please

LetSbe a set withnelements.

(a) How many subsets ofShave 3 elements ?

(b)How many subsets ofShave more than 2 elements ?

thank you

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- December 18th 2008, 05:22 AMqwerty321subset
hello..i need help please

Let*S*be a set with*n*elements.

(a) How many subsets of*S*have 3 elements ?

(b)How many subsets of*S*have more than 2 elements ?

thank you

- December 18th 2008, 06:25 AMIsomorphism