allery120 کے سروے میں، 70 کو سیب اور 50 کو آم پسند آئے۔ 20 نے دونوں کو پسند کیا۔ کتنے لوگوں نے صرف سیب کو پسند کیا؟
A50
B60
C30
D40
Answer & Solution
Correct answer: A. 50
صرف سیب = 70 - 20 = 50 ایپل کے دائرے میں لیکن اوورلیپ سے باہر۔
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