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  4. If n(A) = 3, n(B) = 4, then n(A × A × B) is equal to

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

Relations and Functions

Solution:

$n(A \times A \times B)$ $=n\left(A\right)\times n\left(A\right) \times n\left(B\right)$
$=3\times3\times4=36$