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Find the average of first 20 multiple...

Find the average of first 20 multiples of 7.

A

71.5

B

73.5

C

75.2

D

76.6

Text Solution

Verified by Experts

The correct Answer is:
B

Average =`7(1+2+3+……+120)//20=(7xx20xx21)//(20xx2)=73.5`
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