What is the arithmetic mean of first 20 ...

What is the arithmetic mean of first 20 odd natural numbers ?

A

19

B

20

C

22

D

17

Verified by Experts

The correct Answer is:

B

प्रथम 20 विषम संख्याओं का योग `= 20 ^(2) = 400`
`therefore` औसत` = (400)/(20) = 20`

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