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B
21
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C
30
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D
42
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Solution
The correct option is A15 Consider the diagram attached A is failed in social science B is failed in mathematics C is failed in science we have to find failed only in social science i.e, the orange portion 1=A−(4+5+7) 7 is failed in all the subject 4 is failed in social science and science i.e, passed in mathematics 5 is failed in social science and mathematics i.e, passed in science failed in social science =175−(60+52+48)=15 Hence, option 'A' is correct.