Question

Which of the following is not a factor of $5x^{2}y$?

• A. $5x^2$y
• B. $xy$
• C. $3x^2$
• D. $x^2$

Answer 1

The correct option is C

$3x^2$

When a number (dividend) is completely divided by another number (divisor), then this divisor is called a factor.

$\frac{5x^{2}y}{5x^{2}y}=1$, $\frac{5x^{2}y}{xy}=5x$, $\frac{5x^{2}y}{x^2}=5y$

However, $3x^2$ cannot perfectly divide $5x^{2}y$ as 3 is not a multiple of 5.

Hence, $3x^2$ is not a factor of $5x^{2}y$.