allery120 लोकांच्या एका सर्वेक्षणात, 70 लोकांना सफरचंद आणि 50 लोकांना आंबे आवडत होते; 20 लोकांना दोन्ही आवडत होते. फक्त सफरचंद आवडणारे किती लोक होते?
A50
B60
C30
D40
Answer & Solution
Correct answer: A. 50
फक्त सफरचंद = 70 - 20 = सफरचंदाच्या वर्तुळातील परंतु सामाईक भागाबाहेरील 50 लोक.
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