In a class of 60 students, 25 students play cricket and 20 students play tennis, and 10 students play both the games, then the number of students who play neither are
A
0
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B
35
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C
45
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D
25
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Solution
The correct option is D25 Let 'A' be the set of students who play cricket, 'B' be the set of students who play tennis.
It is given that, n(A)=25, n(B)=20 and n(A∩B)=10= students who play both the games
Thus n(A∪B)=n(A)+n(B)−n(A∩B)=20+25−10=35
Therefore the students who play neither of the cricket and tennis =60−35=25