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curiosoperoinutil.com :: Ver Tema - Pregunta 577: ojo reconocer solos ese radar (Ezperun)
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Pregunta 577: ojo reconocer solos ese radar (Ezperun)
https://curiosoperoinutil.com/forum/viewtopic.php?f=10&t=6194
Página 1 de 1

Autor:  J Glez [ Dom 01 Jun 2008, 18:04 ]
Asunto:  Pregunta 577: ojo reconocer solos ese radar (Ezperun)

Tenemos una pregunta:
___________________________________________________

¿Todos los números x de y cifras son divisibles por z?
___________________________________________________

x: ver título
y: instrumento musical
z: relacionado con las quinielas y con otro sorteo de España

w: grupo musical sueco... bueno... aunque muy hortera.

Queso para quien conteste a la pregunta y la demuestre matemáticamente con ayuda de w.

Autor:  Ezperun [ Dom 01 Jun 2008, 22:11 ]
Asunto: 

Pregunta:
¿Todos los números capicúas de 4 cifras son divisibles por 11?

Respuesta usando ABBA... sí

Demostración:
Todo número capicúa de cuatro cifras tiene la forma ABBA, donde A y B son dos dígitos distintos o iguales. Tal número lo podemos expresar como:


1000A + 100B + 10B + A = (1000 + 1)A + (100 + 10)B =

1001A + 110B = 11x91A + 11x10B = 11(91A + 10B)

Autor:  J Glez [ Dom 01 Jun 2008, 22:56 ]
Asunto: 


Autor:  ytrio [ Lun 02 Jun 2008, 09:51 ]
Asunto: 


Autor:  J Glez [ Lun 02 Jun 2008, 16:18 ]
Asunto: 


Autor:  ytrio [ Lun 02 Jun 2008, 18:00 ]
Asunto: 


Autor:  Ezperun [ Lun 02 Jun 2008, 18:12 ]
Asunto: 


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