Question

If $n(A)=3$, $n(B)=4$, then $n(A\times A\times B)$ is equal to

• A. $36$
• B. $12$
• C. $108$
• D. $48$

Answer 1

Answer: (A)

$n(A\times A\times B)$ $=n\left(A\right)\times n\left(A\right)\times n\left(B\right)$
$=3\times 3\times 4=36$