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A school wants the smallest number of students (more than 100) that can be
arranged BOTH in rows of 24 and in a perfect square formation
(rows = columns). Find that smallest number of students and the side of
its square formation.

Class 8Finding Square RootsSquares and Roots
  • A144 students, side 12
  • B576 students, side 24
  • C256 students, side 16
  • D324 students, side 18

Step-by-Step Solution

The number must be a multiple of 24, a perfect square and more than 100. 3, so a perfect-square multiple needs an even power of every prime: , and is indeed a multiple of 24. 144 > 100, so it is the smallest such number, with side .
Answer: A) 144 students, side 12

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