Question

A={1,2,3,4,5,6,7,8,9,10}; B={2,3,5,7}. Find AnB and show that AnB=B.

Answer 1

A={1,2,3,4,5,6,7,8,9,10}; B={2,3,5,7}A n B = {2,3,5,7}
We see that B is a proper subset of A.
⇒A n B=B={2,3,5,7}.