ABC26GN1376 · Square Roots and Cube Roots

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

If $\sqrt{18 \times 14 \times x}=84$, then $x$ equals
(a)22
(b)24
(c)28
(d)32
Answer
Answer (as printed): C
Explanation
$$\begin{aligned} & \sqrt{18 \times 14 \times x}=84 \Leftrightarrow 18 \times 14 \times x=84 \times 84 \\ & \Leftrightarrow x=\frac{84 \times 84}{18 \times 14}=28 . \end{aligned}$$

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

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