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The average of first 128 odd natural numbers, is:
Question

The average of first 128 odd natural numbers, is:

A.

129

B.

128.5

C.

128

D.

127.5

Correct option is C

Given:

The first 128 odd natural numbers.

Formula Used:
The sum of the first n odd natural numbers is given by:

Sum = n2n^2

Average =Sum of numbersn \frac{\text{Sum of numbers}}{n}

Solution:

For the first 128 odd natural numbers:

Sum =1282=16384128^2 = 16384

Average = 16384128=128\frac{16384}{128} = 128

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