allery50 জন সদস্য থকা এটা ক্লাৱত, 28 জনে ডবা খেলে, 24 জনে কেৰম খেলে আৰু 8 জনে এটাও খেল নেখেলে। কিমানজনে দুয়োটা খেল খেলে?
A10
B12
C14
D16
Answer & Solution
Correct answer: A. 10
Union = 50 - 8 = 42। দুয়োটা খেলা ব্যক্তিৰ সংখ্যা = n(Chess) + n(Carrom) - Union = 28 + 24 - 42 = 10।
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