Respuesta :

konrad509
The permutation of all digits is [tex]6![/tex], but we don't differentiate the same digits, so we divide it by the number of permutations of 1's ([tex]3![/tex]) and 2's ([tex]2![/tex])

[tex]\dfrac{6!}{3!2!}=\dfrac{4\cdot5\cdot6}{2}=60[/tex]

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