Subject: General Aptitude · Chapter: Square Roots and Cube Roots · Exam: · Marks: · Difficulty:
$\sqrt{\frac{.081 \times .484}{.0064 \times 6.25}}$ is equal to
(a)0.9
(b)0.99
(c)9
(d)99
Answer
Answer (as printed): B
Explanation
Sum of decimal places in the numerator and denominator under the radical sign being the same, we remove the decimal. $$\text { ∴ Given exp. }=\sqrt{\frac{81 \times 484}{64 \times 625}}=\frac{9 \times 22}{8 \times 25}=0.99 .$$
Explanation as extracted from the printed page; notation may be imperfect.