alleryयुनियन ऑफ A आनी B हातूंत 90 वांगडी, A∩B कडेन 20 आनी A कडेन 60 आसात. B च्या कितले वांगडी आसात?
A50
B70
C30
D40
Answer & Solution
Correct answer: A. 50
90 = 60 + B - 20, B = 50 पासून.
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