allery60 మంది విద్యార్థులున్న తరగతిలో, 35 మంది గణితాన్ని, 30 మంది సైన్స్ను మరియు 15 మంది రెండింటినీ ఇష్టపడతారు. గణితాన్ని మాత్రమే ఇష్టపడేవారు ఎంతమంది?
A15
B20
C25
D30
Answer & Solution
Correct answer: B. 20
గణితం మాత్రమే = n(Math) - n(Math ∩ Science) = 35 - 15 = 20.
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