allery70 জন ব্যক্তিৰ এটা দলত, 40 জনে চাহ খায়, 35 জনে কফি খায় আৰু 15 জনে এটাও নাখায়। কিমানজনে দুয়োটা খায়?
A10
B15
C20
D25
Answer & Solution
Correct answer: C. 20
Union = 70 - 15 = 55। দুয়োটা খোৱা ব্যক্তি = 40 + 35 - 55 = 20।
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