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Nmro #2 : ba
Si: a + b = 11
Entonces:
ab + 9 = ba
a = 5
b = 6
Se cumple que:
• a + b = 11
• 56 + 9 = 65 => ab + 9 = ba
Por lo tanto la diferencia entre las cifras del Nmro original es:
6 - 5 = 1
RPTA.: 1 alternativa "B"