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Números primos y divisibilidad

Riddle

Played 3 %Accuracy 100 Average time 00:33

About this activity

Reto de números y reglas

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Argentina

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Números primos y divisibilidad
 

Números primos y divisibilidadOnline version

Reto de números y reglas

by Esmeralda
1

Numero primo:se puede dividir entre 1 y el mismo: ¿cuál de estos es primo? 3, 8, 10 o 4

Pistas

Un primo puede dividirse entre 1 y sí mismo sin resto

Entre las opciones, 4 y 6 no son primos

Es primo si solo tiene dos divisores: 1 y él mismo

2

Los números compuestos son los que tienen más de dos divisores... ¿cuál de estas opciones es compuesto? 8, 7, 3 o 2

Pistas

Entre las opciones, 5 y 2 son primos

8 tiene divisores 1,2,4,8

Un número compuesto tiene más de dos divisores

3

Criterios de divisibilidad de 9:... ¿cuál opción es divisible por 9? 81, 41 o 52

Pistas

63 también es múltiplo de 9

81 es múltiplo de 9

Para 9, la suma de dígitos debe ser múltiplo de 9

4

Criterios de divisibilidad de 5:... ¿cuáles es divisor de 5? 133, 23, 50 o 26

Pistas

23 no cumple

Entre las opciones, 100, 50 y 25 cumplen

Un número es divisible por 5 si termina en 0 o 5

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