Question

if A={1,2,3} and B={2,4,5} and C={2,5} find (A-C) ×(B-C)

Answer 1

A = {1,2,3}
B = {2,4,5}
C = {2,5}

A-C = {1,3}
B-C = {4}

So,
(A-C)×(B-C)
= {1,3} × {4}
= { (1,4) , (3,4) }