ভর = M , ঘনত্ব = D হলে আয়তনের মাত্রা কি হবে?
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A school is an educational environment where children go to learn from a teacher. Topics such as reading, writing and mathematics are central to education. Most of a student's time is spent in a classroom. This is where 10 to 30 people sit to take part in educational discussion. In the United States, the average number of students per classroom in primary schools is 23.1.[1]
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