allery৭০ জন ব্যক্তিৰ এটা দলত ৪০ জনে আলোচনী P পঢ়ে, ৩০ জনে আলোচনী Q পঢ়ে আৰু ১০ জনে দুয়োখন পঢ়ে। কিমানজনে ঠিক এখন আলোচনী পঢ়ে?
A55
B50
C40
D45
Answer & Solution
Correct answer: B. 50
ঠিক এখন = (40 - 10) + (30 - 10) = 50।
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