RRB NTPC Prelims Model Paper 2 with solutions

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Directions (Q. 33–35): Study the following frequency polygon and answer the questions.
Given a line graph showing the number of students passed in Higher Secondary Examination in a school over the years 2008 to 2013.
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Question : 35 of 101
 
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The increase in the percentage of passed students from 2008 to 2011 is approximately
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