alleryಒಂದು ಹಾಸ್ಟೆಲ್ನಲ್ಲಿ, 60 ವಿದ್ಯಾರ್ಥಿಗಳು ದೈನಂದಿನ A, 50 ದೈನಂದಿನ B ಮತ್ತು 20 ಎರಡನ್ನೂ ಓದುತ್ತಾರೆ. ಎಷ್ಟು ಮಂದಿ ದೈನಂದಿನ A ಅನ್ನು ಮಾತ್ರ ಓದುತ್ತಾರೆ?
A20
B30
C35
D40
Answer & Solution
Correct answer: D. 40
ಕೇವಲ ದೈನಂದಿನ A = n(A) - n(A ∩ B) = 60 - 20 = 40.
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