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Answered

Find the number of distinguishable permutation of the digits of the number 287 772​

Sagot :

Answer:

287772​ = 6 digits

P(n,r) = P(6,6)  

= 6!/(6−6)!

= 720

Repeated digits: 7 (3 times), 2 (2 times)

720/(3!2!) = 60 permutations

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