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  • There are 500 children in a school. For a P.T. drill they have to stand in such a manner that the number of rows is equal to number of columns.How many children would be left out in this arrangement.

Q.9  There are 500 children in a school. For a P.T. drill they have to stand in such a manner that the number of rows is equal to number of columns. How many children would be left out in this arrangement.

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Given that the number of rows is equal to the number of columns.    i.e., in the form of x^2  

So the number of students that can stand in this order will be the perfect square number just less than 500.

We know that              22^2 = 484      and      23^2 = 529

So the number of students that would be left out in this arrangement = 500 - 484 = 16 students.

Posted by

Devendra Khairwa

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