Question

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On the playground, if the children are made to stand for drill either 20 to a row or 25 to a row, all rows are complete and no child is left out. What is the least possible number of children in that school?

Answer 1

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☕ If the children are to stand in rows such that all rows are complete and no children is left out, then the number of children in the school must be in multiples of both 20 and 25. So, the lowest possible number of children in the school is the LCM of 20 and 25 .

☃️ Multiples of 20 → 20, 40, 60, 80, 100, 120, 140, 160, 180, 200....

☃️ Multiples of 25 → 25, 50, 75, 100, 125, 150, 175, 200, 225, 250....

⭐ Common multiples of 20 & 25 → 100 & 200

✔️ Lowest of possible number of children in that school = L.C.M of 20 & 25 = 100

∴ The lowest possible number of children in that school is 100 .

Answer 2

Answer:

☕ If the children are to stand in rows such that all rows are complete and no children is left out, then the number of children in the school must be in multiples of both 20 and 25. So, the lowest possible number of children in the school is the LCM of 20 and 25 .

If the children are to stand in rows such that all rows are complete and no children is left out, then the number of children in the school must be in multiples of both 20 and 25. So, the lowest possible number of children in the school is the LCM of 20 and 25 .☃️ Multiples of 20 → 20, 40, 60, 80, 100, 120, 140, 160, 180, 200....

If the children are to stand in rows such that all rows are complete and no children is left out, then the number of children in the school must be in multiples of both 20 and 25. So, the lowest possible number of children in the school is the LCM of 20 and 25 .☃️ Multiples of 20 → 20, 40, 60, 80, 100, 120, 140, 160, 180, 200....☃️ Multiples of 25 → 25, 50, 75, 100, 125, 150, 175, 200, 225, 250....

If the children are to stand in rows such that all rows are complete and no children is left out, then the number of children in the school must be in multiples of both 20 and 25. So, the lowest possible number of children in the school is the LCM of 20 and 25 .☃️ Multiples of 20 → 20, 40, 60, 80, 100, 120, 140, 160, 180, 200....☃️ Multiples of 25 → 25, 50, 75, 100, 125, 150, 175, 200, 225, 250....⭐ Common multiples of 20 & 25 → 100 & 200

If the children are to stand in rows such that all rows are complete and no children is left out, then the number of children in the school must be in multiples of both 20 and 25. So, the lowest possible number of children in the school is the LCM of 20 and 25 .☃️ Multiples of 20 → 20, 40, 60, 80, 100, 120, 140, 160, 180, 200....☃️ Multiples of 25 → 25, 50, 75, 100, 125, 150, 175, 200, 225, 250....⭐ Common multiples of 20 & 25 → 100 & 200✔️ Lowest of possible number of children in that school = L.C.M of 20 & 25 = 100

If the children are to stand in rows such that all rows are complete and no children is left out, then the number of children in the school must be in multiples of both 20 and 25. So, the lowest possible number of children in the school is the LCM of 20 and 25 .☃️ Multiples of 20 → 20, 40, 60, 80, 100, 120, 140, 160, 180, 200....☃️ Multiples of 25 → 25, 50, 75, 100, 125, 150, 175, 200, 225, 250....⭐ Common multiples of 20 & 25 → 100 & 200✔️ Lowest of possible number of children in that school = L.C.M of 20 & 25 = 100∴ The lowest possible number of children in that school is 100 .

Step-by-step explanation:

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