allery100 ವಿದ್ಯಾರ್ಥಿಗಳ ಗುಂಪಿನಲ್ಲಿ, 60 ಕ್ರಿಕೆಟ್ ಆಡುತ್ತಾರೆ, 50 ಫುಟ್ಬಾಲ್ ಆಡುತ್ತಾರೆ, ಮತ್ತು 20 ಎರಡನ್ನೂ ಆಡುತ್ತಾರೆ. ಎಷ್ಟು ಮಂದಿ ಯಾವುದೇ ಕ್ರೀಡೆಯನ್ನು ಆಡುವುದಿಲ್ಲ?
A10
B20
C30
D40
Answer & Solution
Correct answer: A. 10
ಒಕ್ಕೂಟ = n(C) + n(F) - n(C ∩ F) = 60 + 50 - 20 = 90. ಆಡುತ್ತಿರುವ ವಿದ್ಯಾರ್ಥಿಗಳು ಎರಡನ್ನೂ = 100 - 90 = 10.
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