¿Cuántos divisores primos (factores primos distintos) tiene el número 84, si su descomposición es 84 = 2² × 3¹ × 7¹?
Repaso criterios de divisibilidad y números primos

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Mathematics
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10th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
3 divisores primos: 2, 3, 7.
2.
FLASHCARD QUESTION
Front
¿Cómo se calcula la cantidad total de divisores de un número a partir de su descomposición en factores primos?
Back
Se suma 1 a cada exponente de los factores primos y se multiplican los resultados.
3.
FLASHCARD QUESTION
Front
Dado el numeral 4X38, encuentra el dígito que debe reemplazar a “X” para que el número sea divisible por 9.
Back
El dígito es: 3.
4.
FLASHCARD QUESTION
Front
Calcule la suma de los primeros 120 números que son múltiplos de 12.
Back
87,120.
5.
FLASHCARD QUESTION
Front
¿Qué es un número primo?
Back
Un número primo es un número mayor que 1 que solo tiene dos divisores: 1 y él mismo.
6.
FLASHCARD QUESTION
Front
¿Cuáles son los primeros cinco números primos?
Back
2, 3, 5, 7, 11.
7.
FLASHCARD QUESTION
Front
¿Qué es un divisor?
Back
Un divisor de un número es un entero que puede dividir ese número sin dejar un residuo.
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