1.

In a class of 175 students the following data shows the number of students opting 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

Answer»

Let M,P and C denote the set of students who opting mathematics ,physics and chemistry respectively. 

Number of students who opted. 

mathematics only = n(M) - n(M⋂P) - n(M⋂C) + n(M⋂P⋂C) 

= 100 - 30 - 28 +18 

= 60



Discussion

No Comment Found

Related InterviewSolutions