allery100 জন কর্মীর একটি অফিসে 70 জনের গাড়ি রয়েছে, 40 জনের বাইক রয়েছে এবং 25 জনের উভয়ই রয়েছে। কতজনের কোনোটিই নেই?
A10
B15
C20
D25
Answer & Solution
Correct answer: B. 15
Union = 70 + 40 - 25 = 85। কোনোটিই নেই = 100 - 85 = 15।
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