√(110.25) × √(0.01) ÷ √(0.0025)-√(420.25) equals · ABC26GN1400
Subject: General Aptitude · Chapter: Square Roots and Cube Roots · Exam: SNAP 2010
$\sqrt{110.25} \times \sqrt{0.01} \div \sqrt{0.0025}-\sqrt{420.25}$ equals
(a)0.50
(b)0.64
(c)0.73
(d)0.75
Answer
Explanation
Given exp. $=\sqrt{\frac{11025}{100}} \times \sqrt{\frac{1}{100}} \div \sqrt{\frac{25}{10000}}-\sqrt{\frac{42025}{100}}$ $$\begin{aligned} & =\frac{105}{10} \times \frac{1}{10} \div \frac{5}{100}-\frac{205}{10} \\ & =\frac{105}{100} \times \frac{100}{5}-\frac{205}{10} \\ & =21-\frac{205}{10}=\frac{5}{10}=\frac{1}{2}=0.50 \end{aligned}$$
Explanation as extracted from the printed page; notation may be imperfect.
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