allery45 विद्यार्थ्यांच्या वर्गांत 25 इतिहासाचो अभ्यास करतात, 20 भूगोलाचो अभ्यास करतात आनी 5 दोगांयचोय अभ्यास करिनात. कितले जाण दोगांयचो अभ्यास करतात?
A15
B10
C5
D0
Answer & Solution
Correct answer: C. 5
संघ = 45 - 5 = 40. दोनूय = 25 + 20 - 40 = 5.
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