Question

If n(A)=3, n(B)=4, then $n(A\times B\times C)=36findn\left(C\right)$ is equal to :

• A. 3
• B. 12
• C. 108
• D. none of these

Answer 1

The correct option is A 3

$n\left(A\right)=3$

$n\left(B\right)=4$

$n(A\times B\times C)=36$

$n(3\times 4\times C)=36$

$n(12\times C)=36$

$\therefore n\left(C\right)=3$

So, $n(A\times B\times C)=36$

$n(3\times 4\times 3)=36$. H.P.