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T or F and explanation 1.There are 5! possible sets of five specific names. 2. A...

T or F and explanation

1.There are 5! possible sets of five specific names.
2. A ∪ A ′ = ∅
3. If A and B are finite sets, then n(A ∪ B) = n(A) + n(B)
4. C(10, 9) = C(10, 1)
5. If A and B are finite sets, then n(A ∪ B) = n(A) + n(B) − n(A ∩ B)
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