Question

U = {x 1 x e N, 1 < x < 10] A= (1,2, 3,4, 5}, B= {4, 5, 7, 8, 9}. What is A'N B'=?

Answer 1

Answer:

Answer

Given, universal set, U={1,2,3,4,5,6,7}

A={1,2,5,7}

B={3,4,5,6}

(A∪B)

′

=U−(A∪B)

={1,2,3,4,5,6,7}−{1,2,3,4,5,6,7}

=ϕ

A

′

∩B

′

=(U−A)n(U−B)

={3,4,6}n{1,2,7}

=ϕ

Hence (A∪B)

′

=A

′

∩B

′

.

solution

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