Question

If A = {3, 5, 7, 9, 11}, B = {7, 9, 11, 13} and C = {11, 13, 153. Find A ∩ (B ∪ C).

Answer 1

A ∩ (B ∪ C) = {3,5,7,9,11} ∩ {7,9,11,13,15} = {7,9,11}