If $$0.13 \div {p^2} = 13{\text{,}}$$   then p equals = ?

A. 0.01

B. 0.1

C. 10

D. 100

Answer: Option B

Solution(By Examveda Team)

$$\eqalign{ & \Leftrightarrow \frac{{0.13}}{{{p^2}}} = 13 \cr & \Leftrightarrow {p^2} = \frac{{0.13}}{{13}} \cr & \Leftrightarrow {p^2} = \frac{1}{{100}} \cr & \Leftrightarrow p = \sqrt {\frac{1}{{100}}} \cr & \Leftrightarrow p = \frac{1}{{10}} \cr & \Leftrightarrow p = 0.1 \cr} $$