Question

If n(A) = 3 and n(B) = 2 then n(A × B) = ___________

For finding $n (A \times B)$ , we have direct formule for this and this formula is

n (A \times B) = n (A) + n (B)

Now,

\begin{aligned} n (A \times B) & = & n (A) + n (B) \\ = & 3 \times 2 (Givrn that, n (A) = 3 and n (B) = 2) \\ = & 6 \cdot \end{aligned}

So, the correct answer is option-1, $\to 6$