if A= {2,3,9,11,5} ,B={9,11,17,21}
find n(A) ,n(P(A) 2)n(B) ,n(P(B) 3)
AnB 4) AUB 5) n(AnB) 6) n (AUB)
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Answer:
1) n(A) = 5
n(P(A)) = 32
2) n(B) = 4
n(P(B)) = 16
3) AnB = {9,11}
4)AUB = {2,3,5,9,11,17,21}
5) n(AnB) = 2
6) n(AUB) = 7
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