Question

if A={1,2,3,4,}B={1,2,3,4,5,6,7,8} then find AOB,BUA,AnB,BAA,A-B,B-A.what do you notice about result?​

Answer 1

Answer:

Correct option is

A

A−B={1,2}

B

B−A={5,6}

C

[(A−B)−(B−A)]∩A={1,2}

Given, A={1,2,3,4},B={3,4,5,6}

∴A−B={1,2};B−A={5,6}

[(A−B)−(B−A)]∩A=[{1,2}−{5,6}]∩{12,3,4,}={1,2}