If A = {3, 6, 9, 12, 15, 18}, B = {4, 8, 12, 16, 20}, C = {2, 4, 6, 8, 10, 12} and D = {5, 10, 15, 20, 25}, find: n(A - C)

Answers (1)
S safeer

A-C={3,9,15,18}

n(A-C)=4

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