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Mathematics, 01.08.2019 05:00 dsteele3642

Se escriben, cada uno en un papel, los dígitos desde el 1 al 9. si se eligen al azar 2 papeles ¿cual es la probabilidad de obtener como diferencia entre los dígitos el número 3?

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Se escriben, cada uno en un papel, los dígitos desde el 1 al 9. si se eligen al azar 2 papeles ¿cual...
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