Question: Suppose A is a set with 8 elements. Answer the following questions: How many subsets of exactly size 2 (i.e. with exactly 2 elements) does

Suppose A is a set with 8 elements. Answer the following questions:

  1. How many subsets of exactly size 2 (i.e. with exactly 2 elements) does A have?
  2. How many subsets of at least size 2 does A have?
  3. How many subsets of at most size 2 does A have?

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