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Find the least number that is divisible by all the numbers 1 to 10 (both inclusive).

Question

Find the least number that is divisible by all the numbers 1 to 10 (both inclusive).

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Solution

Para encontrar el menor número que sea divisible por todos los números del 1 al 10 (ambos inclusive), debemos calcular el mínimo común múltiplo (MCM) de estos números. Aquí están los pasos:

  1. Descomposición en factores primos:

    • 1: No tiene factores primos.
    • 2: 22
    • 3: 33
    • 4: 222^2
    • 5: 55
    • 6: 2×32 \times 3
    • 7: 77
    • 8: 232^3
    • 9: 323^2
    • 10: 2×52 \times 5
  2. Seleccionar los factores primos con los mayores exponentes:

    • Para el número 2, el mayor exponente es 232^3 (de 8).
    • Para el número 3, el mayor exponente es 323^2 (de 9).
    • Para el número 5, el mayor exponente es 55 (de 5 y 10).
    • Para el número 7, el mayor exponente es 77 (de 7).
  3. Calcular el MCM:

    • Multiplicamos estos factores primos con sus mayores exponentes: MCM=23×32×5×7 MCM = 2^3 \times 3^2 \times 5 \times 7
  4. Realizar las multiplicaciones:

    • Primero, calculamos 23=82^3 = 8.
    • Luego, 32=93^2 = 9.
    • Multiplicamos 8×9=728 \times 9 = 72.
    • Multiplicamos 72×5=36072 \times 5 = 360.
    • Finalmente, multiplicamos 360×7=2520360 \times 7 = 2520.

Por lo tanto, el menor número que es divisible por todos los números del 1 al 10 es 2520.

This problem has been solved

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