UPSC NDA Math Model Paper 7

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Comprehension:(Que No. 20 - 21)
Consider the information given below and answer the two items (02) that follow:
In a class, 54 students are good in Hindi only, 63 students are good in Mathematics only and 41 students are good in English only. There are 18 students who are good in both Hindi and Mathematics. 10 students are good in all three subjects.
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