alleryلائبریری کے 90 ارکان ہیں۔ 55 افسانوی کتابیں لیتے ہیں، 48 سائنسی کتابیں لیتے ہیں، اور 13 ان دونوں میں سے کوئی قسم بھی ادھار نہیں لیتے۔ دونوں قسم کی کتابیں لینے والے کتنے ہیں؟
A22
B30
C26
D34
Answer & Solution
Correct answer: C. 26
77 اراکین کم از کم ایک قسم کا قرض لیتے ہیں، لہذا اوورلیپ 55 + 48 - 77 = 26 ہے۔
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