allery100 மாணவர்களில், 60 பேருக்குக் கணிதமும், 50 பேருக்கு அறிவியலும், 40 பேருக்கு இரண்டும் பிடிக்கும். கணிதத்தை மட்டும் விரும்புபவர்கள் எத்தனை பேர்?
A30
B20
C40
D60
Answer & Solution
Correct answer: B. 20
கணிதம் மட்டும் = மொத்த கணிதம் - இரண்டும் = 60 - 40 = 20.
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