Children stand 10 in a row to perform a drill. how many children can be there in a drill?
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The number of children can be one of 10, 20, 30, ..., 100, ... in a drill.
Step-by-step explanation:
Since there are 10 children in a row to perform a drill, there can be 1 or 2 or 3 or more rows for such purpose.
- When there is only one row, total number of students = 10 × 1 = 10.
- When there are two rows, total number of students = 10 × 2 = 20.
- When there are three rows, total number of students = 10 × 3 = 30.
- If we want to make a perfect square drill, total number of students = 10 × 10 = 100.
In general, we can write total number of students to be 10r, where 10 is the number of students in a row and r is the number of rows.
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