Find the average of first 20 multiples of 7. · ABC26GN1500

Subject: General Aptitude · Chapter: Average

Find the average of first 20 multiples of 7.
Answer
No answer key was printed for this question.
Explanation
Required average $=\frac{7(1+2+3+\ldots+20)}{20}=\left(\frac{7 \times 20 \times 21}{20 \times 2}\right)=\left(\frac{147}{2}\right)=73.5$.

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

Study loop for Average

1. Practise the PYQsPrevious-year questions, with answers

· Browse this chapter in the app