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Counting numbers are to be formed using only the digits 8, 5, 1, 7, 3, and 6. Determine the number of different possibilities for two-digit numbers. ___ numbers (simplify your answer. Type a whole number.)

Respuesta :

Find out the permutation 2P6

so

[tex]2P6=\frac{6!}{(6-2)!}=30[/tex]

the answer is 30 numbers

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