allery100 लोगों में से, 70 लोग चाय पीते हैं, 45 लोग कॉफी पीते हैं और सभी कम से कम एक पेय पीते हैं। कितने लोग दोनों पीते हैं?
A25
B10
C20
D15
Answer & Solution
Correct answer: D. 15
दोनों = 70 + 45 - 100 = 15, क्योंकि सभी 100 लोग सम्मिलन (यूनियन) में शामिल हैं।
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