ABC26GN1720 · Problems on Numbers

Subject: General Aptitude · Chapter: Problems on Numbers · Exam: · Marks: · Difficulty:

The sum of three consecutive odd numbers is 20 more than the first of these numbers. What is the middle number?

(a)7

(b)9

(c)11

(d)Data inadequate

(e)None of these

Answer

Answer (as printed): B

Explanation

Let the numbers be $x, x+2$ and $x+4$. Then, $x+(x+2)+(x+4)=x+20 \Leftrightarrow 2x=14 \Leftrightarrow x=7$. ∴ Middle number $=x+2=9$.

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