Respuesta:
30ab = 13
Explicación paso a paso:
1 + 2 + 3 + ... + 20 = (1 + 20).20/2 = 210
210ab = 91
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Respuesta:
30ab = 13
Explicación paso a paso:
1 + 2 + 3 + ... + 20 = (1 + 20).20/2 = 210
210ab = 91
30ab = 13