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The average of first 121 odd natural numbers, is
Question

The average of first 121 odd natural numbers, is

A.

122

B.

120.5

C.

121

D.

121.5

Correct option is C

Given:

We need to find the average of the first 121 odd natural numbers.

Formula Used:

Sum of the first n odd natural numbers = n2

Average = SumTotal count\frac{\text{Sum}}{\text{Total count}}​​

Solution:

Sum of the first 121 odd natural numbers:

Sum = (121)2 = 14641

Average of the first 121 odd natural numbers:

Average = 14641121\frac{14641}{121}​ = 121

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