(1/2)-1/2 is equal to · ABC26GN1913

Subject: General Aptitude · Chapter: Surds and Indices · Exam: Section Officer's 2005

$\left(\frac{1}{2}\right)^{-\frac{1}{2}}$ 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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