Find the average of first six odd numbers ending with 1 .

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Solution

The correct option is B 26
The first six odd numbers ending with 1 are 1, 11, 21, 31, 41, 51

The sum of the 6 odd numbers = 1 + 11 + 21 + 31 + 41 + 51 = 156

Average = $\frac{S u m o f t h e o b s e r v a t i o n s}{t o t a l n u m b e r o f o b s e r v a t i o n s}$

= $\frac{156}{6}$

= 26

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Find the mean of first six odd numbers ending with 1 .

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