21. There are 854 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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2
Answer:
13
Step-by-step explanation:
To arrange them in equal rows and columns
He need to find square root of 854
by square root we get =29.22
to get exact number we need to find square of 29= 841 .
so, subtract it to get total number of students who should leave
854-841=13 students
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