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MCQ
In a class of 60 students, 35 play cricket, 25 play football, 10 play both. How many play neither?
Biology
A 10
B 15
C 20
D 5
Explanation

Using inclusion-exclusion: at least one sport = 35 + 25 - 10 = 50. Neither = 60 - 50 = 10.

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