Question

If n(A)=4, n(B)=3, $n(A\times B\times C)=24,thenn\left(C\right)$ is equal to

• A. 288
• B. 1
• C. 2
• D. 12

Answer 1

Answer: (C)

2

$n\left(A\right)=4n\left(B\right)=3n(A\times B\times C)=24$

We have $n(A\times B\times C)=n\left(A\right)\times n\left(B\right)\times n\left(C\right)$

$\Rightarrow 24=4\times 3\times n\left(C\right)$

$\therefore n\left(C\right)=\frac{24}{12}=2$