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The sum of deviations of a set of values...

The sum of deviations of a set of values `x_(1), x_(2), x_(3), …… x_(n)` measured from 50 is -10 and the sum of deviations of the values from 46 is 70. Find the value of n and the mean.

A

20,49.5

B

25,49.6

C

30,50.5

D

35,50.6

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The correct Answer is:
A
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