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A man was assigned to find the average age of a class of 13 students. By mistake, he included the 35 years old teacher as well and hence the average went up by 2 years. Find the actual average age of the class.

1:
8 years
2:
7 years
3:
15 years
4:
11 years
5:
9 years
Solution:
Chapter Name: Average

This has been asked in Question Paper

SBI Clerk mains 2016

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