alleryএকটি ক্যাফেতে 150 জন দর্শনার্থী এসেছিলেন। 25 জন কফি এবং চা উভয়ই নিয়েছিলেন, 40 জন কেবল চা নিয়েছিলেন এবং 60 জন কেবল কফি নিয়েছিলেন। কতজন কোনটিই নেননি?
A15
B20
C35
D25
Answer & Solution
Correct answer: D. 25
ব্যবহৃত তিনটি অঞ্চলের মোট 60 + 25 + 40 = 125, ফলে উভয় বৃত্তের বাইরে থাকে 150 - 125 = 25।
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