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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

Total: 100

The median lies in which one of the following class intervals?

0−10
10−20
20−30
30−40

Validate

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