allery60 জন প্রার্থীর একটি পরীক্ষায়, 40 জন Paper 1-এ পাস করেছে, 35 জন Paper 2-তে পাস করেছে এবং 25 জন উভয়টিতেই পাস করেছে। কতজন শুধুমাত্র Paper 2-তে পাস করেছে?
A5
B8
C10
D15
Answer & Solution
Correct answer: C. 10
শুধুমাত্র Paper 2 = n(P2) - n(P1 ∩ P2) = 35 - 25 = 10।
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