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Mathematics, 13.11.2021 15:20 sabrinamellis

Usando as letras do conjunto { a, b, c, d, e, f, g, h, ij } qu quantas senhas de 4 letras podem ser
formadas de modo que duas letras adjacentes, isto é, vizinhas, sejam necessariamente diferentes?

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Usando as letras do conjunto { a, b, c, d, e, f, g, h, ij } qu quantas senhas de 4 letras podem se...

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