৬০ জন ছাত্রের মধ্যে ৪২ জন ফেল করলে পাসের হার কত?
A. ২৫%
B. ৩০%
C. ৩২%
D. ৪০%
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সঠিক উত্তরঃ
B.
৩০%
Explanation:
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