Suppose A = X| X ∈ N, -1 < X < 8 and B = Y| Y ∈ N, -1 < Y < 1 then find A × B.
We know that using formula we get Ⴔ. Calculation gives this directly, check steps: apply rule, substitute values, simplify to get Ⴔ.
Ref: NCERT Mathematics Class XI — Sets, Relations and Functions
