Answers

2015-01-05T10:33:04+05:30
32nd is nina's rank from the last.

REASON :(49-18) +1= 31+1  
                               =32.
 
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2015-01-06T15:04:05+05:30
Nina is 18 and before her there are 17 students.
From the last, her position is 49 -17= 32
Her rank from the last is 32
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