ABC26GN1373 · Square Roots and Cube Roots

Subject: General Aptitude · Chapter: Square Roots and Cube Roots · Exam: · Marks: · Difficulty:

If $0.13 \div p^{2}=13$, then $p$ equals
(a)0.01
(b)0.1
(c)10
(d)100
Answer
Answer (as printed): B
Explanation
$$\begin{aligned} & \frac{0.13}{p^{2}}=13 \\ & \Leftrightarrow p^{2}=\frac{0.13}{13}=\frac{1}{100} \\ & \Leftrightarrow p=\sqrt{\frac{1}{100}}=\frac{1}{10}=0.1 \end{aligned}$$

Explanation as extracted from the printed page; notation may be imperfect.

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