In a class of 175 students the following data shows the number of students opting one or more subjects. Mathe-
matics 100; Physics 70; Chemistry 40; Mathematics and Physics 30; Mathematics and Chemistry 28; Physics and Chemistry 23; Mathematics, Physics and Chemistry 18.
How many students have offered Mathematics alone?
(a) 35 (b) 48 (c) 60 (d) 22
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Answer:
60 is correct answer i think
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