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UPSC 2013 CDS 1 Math Paper

Directions : Consider the following for the next three (03) questions that follow:

In a frequency distribution having class intervals

0-10,10-20,20-30

and

30-40

, the respective frequencies are

x, x+8, x-2

and

x-4

and the arithmetic mean of the distribution is 17.8.

Question : 97 of 100

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