Question

Q-2. Find (A+B) and (A-B). A = 5 3 2 2 -7 9 1-2 -3 B = -4 -7 9 –101​

Answer 1

Step-by-step explanation:

U={1,2,3,4,5,6,7,8,9}

A={1,2,3,4}

B={2,4,6,8}

C={3,4,5,6}

(i) A′=U−A={5,6,7,8,9}

(ii) B′={1,3,5,7,9}

(iii) A∪C={1,2,3,4,5,6}

∴(A∪C)′={7,8,9}

(iv) A∪B={1,2,3,4,6,8}

(A∪B)′={5,7,9}

(v) We know (A′)′=A

⇒(A′)′={1,2,3,4}

(vi) B−C={2,8}

∴(B−C)′={1,3,4,5,6,7,9}