If A ={(x : x ∈ W, x < 2},

Question:

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

Solution:

A = {: x∈ W    x < 2y = {0, 1}

B = {: x∈ N     ; 1 < x < 5} = {2, 3, 4}

C = {3, 5}

Then B ∩ = {3} 

$\therefore A \times(B \cap C)=\{(0,3),(1,3)\}$

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