allery50 विद्यार्थ्यांच्या गटांत 30 हांकां ब्लू, 25 हांकां ग्रीन आनी 10 हांकां दोगांयकय आवडना. कितल्यांक दोनूय रंग आवडटात?
A10
B15
C20
D25
Answer & Solution
Correct answer: B. 15
संघ = 50 - 10 = 40. दोनूय सारके = 30 + 25 - 40 = 15.
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