UPSC Civil Services 2013 Prelims General Studies Paper II

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Direction for the following que (25-29) :
Study the two figures given below and answer the five items that follow:
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Question : 28 of 80
 
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If the number of female Physics professors in the age group 25 – 34 equals 25% of all the Physics professors in that age group, then what is the number of male Physics professors in the age group 25 – 34?
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