3. If u = {1,2,3,5,6,7,8,9,10,11,12,13,14, 15}, A = {1, 3, 4, 6, 7}, B = {2,3,4, 7,10}Then Verify that n (AUB) = n(A)+n (B)-n(AnB)

3. If u = {1,2,3,5,6,7,8,9,10,11,12,13,14, 15}, A = {1, 3, 4, 6, 7}, B

1.	3. If u = {1,2,3,5,6,7,8,9,10,11,12,13,14, 15}, A = {1, 3, 4, 6, 7}, B = {2,3,4, 7,10}Then Verify that n (AUB) = n(A)+n (B)-n(AnB)
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