ABC26GN1913 · Surds and Indices

Subject: General Aptitude · Chapter: Surds and Indices · Exam: 2005 · Marks: · Difficulty:

$\left(\frac{1}{2}\right)^{-\frac{1}{2}}$ is equal to
(a)$\frac{1}{\sqrt{2}}$
(b)$2 \sqrt{2}$
(c)$-\sqrt{2}$
(d)$\sqrt{2}$
Answer
Answer (as printed): D
Explanation
$\left(\frac{1}{2}\right)^{-\frac{1}{2}}=(2)^{\frac{1}{2}}=\sqrt{2}$.

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

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