or
or
Here, students from Dhaka District = 30% of the total students
Students from Dhaka city = 20% of the students from Dhaka District = 20% of (30% of the total students) = 20/100 × 30% of the total students = 6% of the total students
আপনি আমাকে যেকোনো প্রশ্ন করতে পারেন, যেমনঃ
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