allery100 افراد کے گروپ میں 60 تیراکی، 45 سائیکلنگ کرتے ہیں اور 15 ان میں سے کوئی سرگرمی نہیں کرتے۔ دونوں سرگرمیاں کرنے والے کتنے ہیں؟
A20
B25
C15
D30
Answer & Solution
Correct answer: A. 20
85 کم از کم ایک کریں، تو دونوں = 60 + 45 - 85 = 20۔
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