One-fourth of the sum of prime numbers, greater than 4 but less than 16, is the square of · ABC26GN1334

Subject: General Aptitude · Chapter: Square Roots and Cube Roots · Exam: P.C.S. 2009

One-fourth of the sum of prime numbers, greater than 4 but less than 16, is the square of

(a)3

(b)4

(c)5

(d)7

Answer

Answer (as printed): A

Explanation

Sum of prime numbers greater than 4 but less than $16=$ $(5+7+11+13)=36$. $$\therefore \quad \frac{1}{4} \times 36=9=3^{2} .$$

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

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