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Q.

Find the mean of the first 10 even natural numbers.


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a

11

b

18

c

12

d

6 

answer is A.

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Detailed Solution

We need to find the mean of the first 10 even natural numbers.
The first 10 even natural numbers are:
2,4,6,8,10,12,14,16,18,20
We know that,
Mean=Sum of observationsNumber of observations
⇒Mean=2+4+6+8+10+12+14+16+18+2010
⇒Mean=11010
⇒Mean=11
Thus, the mean of the first 10 even natural numbers is 11.
Hence, the correct option is 1.
 
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