ABC26GN1424 · Square Roots and Cube Roots

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

The least number by which 1470 must be divided to get a number which is a perfect square, is

(a)5

(b)6

(c)15

(d)30

Answer

Answer (as printed): D

Explanation

$1470=7 \times 7 \times 5 \times 6$. To make it a perfect square, it must be divided by 5 × 6, i.e., 30.

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