allery80 জন ব্যক্তির মধ্যে 50 জন ইংরেজি পড়েন, 40 জন হিন্দি পড়েন এবং 15 জন কোনটিই পড়েন না। কতজন উভয়ই পড়েন?
A25
B15
C35
D30
Answer & Solution
Correct answer: A. 25
অন্তত একটি ভাষা পড়েন: 80 - 15 = 65, সুতরাং উভয়ই পড়েন = 50 + 40 - 65 = 25।
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