Please answer  till 9:00 am

100 students of a class are picked randomly and instructed to make a human chain such that every prim number position and perfect square positions are occupied by girls only and the rest are occupied by boys only. The ratio of girls in the first 50 students to that of the number of girls in the next 50 students is:
1) 21 : 13
2) 22 : 13
3) 23 : 14
4) 3 : 2


 

Dear student
Perfect squares from 1 to 50 are 1,4,9,16,25,36,49=7 numbersPrime numbers between 1 and 50 are2,3,5,7,11,13,17,19,23,29,31,37,41,43,47=15 numbersTotal girls from 1 to 50 =15+7=22 girlsperfect squares from 51 to 100 are64,81,100=3  numbersPrime numbers between 51 and 100 are53,59,61,67,71,73,79,83,89,97=10 numbersTotal girls from 51 to 100=10+3=13girlsRequired ratio=2213
Regards

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23:14.
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Please explain in detail
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Answer option a
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21:13 is the answer.
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