What is the average of the first 11 multiples of 9?
Explanation:
First 11 multiples of 9 are: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
Required average = (9 + 99)/2 = 54
Hence, option (d).
» Your doubt will be displayed only after approval.
Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.