allery60 लोकांच्या समूहात, 35 जणांना चहा आवडतो, 30 जणांना कॉफी आवडते आणि 10 जणांना यांपैकी काहीही आवडत नाही. दोन्ही आवडणारे किती जण आहेत?
A25
B10
C15
D20
Answer & Solution
Correct answer: C. 15
50 लोकांना किमान एक पेय आवडते, म्हणून दोन्ही आवडणारे = 35 + 30 - 50 = 15.
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