Question

If A ={(x : x ∈ W, x < 2}, B = {x : x ∈ N, 1 < x < 5} and C = 3, 5, then A × (B ∩ C) = _________.

Answer 1

A = {x : x∈ W ; x < 2y = {0, 1}
B = {x : x∈ N ; 1 < x < 5} = {2, 3, 4}
C = {3, 5}

Then B ∩ C = {3}
$\therefore$ A × (B ∩ C) = {(0, 3), (1, 3)}