allery50 জন শিক্ষার্থীর একটি ক্লাসে 60% মেয়ে। সেখানে কতজন মেয়ে রয়েছে?
A25
B30
C35
D40
Answer & Solution
Correct answer: B. 30
50 এর 60% = (60 / 100) * 50 = 30।
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