1o children stand in a row to perform a drill. How many children can be there to perform the drill? Give a rule to caculate this (use r for the number of rows)

How to do this.

Dear Student,

Please find below the solution to the asked query:
In 1 row number of children stand=10number of rows=rSo Total number of students =number of rows×number of children stand in one rowTotal number of students =r×10=10r       Answer

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ur q is incomplete i guess
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