Which smallest number must be added to 710 so that the sum is a perfect cube? · ABC26GN1475

Subject: General Aptitude · Chapter: Square Roots and Cube Roots · Exam: S.S.C. 2005

Which smallest number must be added to 710 so that the sum is a perfect cube?

(a)11

(b)19

(c)21

(d)29

Answer

Answer (as printed): B

Explanation

Required number to be added $$=9^{3}-710=729-710=19 .$$

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

Study loop for Square Roots and Cube Roots