allery100 लोगों के एक समूह में 60 लोग तैरते हैं, 45 लोग साइकिल चलाते हैं और 15 लोग दोनों में से कुछ भी नहीं करते हैं। कितने लोग दोनों गतिविधियां करते हैं?
A20
B25
C15
D30
Answer & Solution
Correct answer: A. 20
85 लोग कम से कम एक गतिविधि करते हैं, इसलिए दोनों करने वाले = 60 + 45 - 85 = 20 हैं।
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