ABC26GN1342 · Square Roots and Cube Roots

Subject: General Aptitude · Chapter: Square Roots and Cube Roots · Exam: 2008 · Marks: · Difficulty:

$\sqrt{11881} \times \sqrt{?}=10137$
(a)8281
(b)8649
(c)9216
(d)9409
(e)None of these
Answer
Answer (as printed): B
Explanation
Let $\sqrt{11881} \times \sqrt{x}=10137$. Then, $109 \times \sqrt{x}=10137$ $$\begin{aligned} & \Leftrightarrow \quad \sqrt{x}=\frac{10137}{109}=93 \\ & \Leftrightarrow \quad x=(93)^{2}=8649 . \end{aligned}$$

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

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