allery100 लोगों में से, 30 केवल समुच्चय P में हैं, 25 केवल समुच्चय Q में हैं और 20 दोनों में हैं। ऐसे कितने लोग हैं जो दोनों में से किसी में भी नहीं हैं?
A45
B35
C25
D15
Answer & Solution
Correct answer: C. 25
वृत्तों के अंदर कुल: 30 + 25 + 20 = 75, इसलिए 100 - 75 = 25 बाहर स्थित हैं।
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