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Question

The Mean of first 10 natural number is:


A

4.5

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B

5.5

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C

6.5

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D

5

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Solution

The correct option is B

5.5


The first 10 natural numbers are 1 to 10.

Sum of first n natural number = n(n+1)/2

So, Sum of first 10 natural numbers is 55.

Mean =55/10 = 5.5


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