Mathematics, 20.04.2021 16:10, jeremy7131

El sistema de comunicaciones de un hotel utiliza los dígitos 2, 3, 4 y 5 para asignar un número de extensión telefónica de 4 dígitos diferentes a cada habitación. ¿Cuántas habitaciones del hotel pueden tener extensión telefónica?

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El sistema de comunicaciones de un hotel utiliza los dígitos 2, 3, 4 y 5 para asignar un número de e...