A class has 175 students. the following data shows the number of students obtaining one or more subjects. mathematics 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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48 is the correct answer?
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