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A Class has 175 students .The followin...

A Class has 175 students .The following data shown the number of student : Physics 70 : Chemistry 40 : Mathematics 100 : Physics and Chemistry 23: Mathematics and Chemistry 28
Mathematics Physics and Chemistry 18 .How many students have offered Mathematics alone ?

A

35

B

48

C

60

D

22

Text Solution

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The correct Answer is:
C
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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 ?

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In a school , there are 20 teachers who teach Mathematics or physics .Of these , 12 teach Mathematics and 4 teach both Physics andMathematics. How many teach Physics ?

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