allery60 நபர்கள் கொண்ட ஒரு குழுவில், 35 பேருக்குத் தேநீரும், 30 பேருக்குக் காபியும் பிடிக்கும், மேலும் 10 பேருக்கு இரண்டுமே பிடிக்காது. இரண்டையுமே விரும்புபவர்கள் எத்தனை பேர்?
A25
B10
C15
D20
Answer & Solution
Correct answer: C. 15
50 நபர்கள் குறைந்தபட்சம் ஒரு பானத்தையாவது விரும்புகிறார்கள், எனவே இரண்டும் = 35 + 30 - 50 = 15.
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