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Mathematics, 15.12.2020 01:10 dani2997
Sonji bought a combination lock that opens with a four-digit number created using the digits 0 through 9. The
same digit cannot be used more than once in the combination.
If Sonji wants the last digit to be a 7 and the order of the digits matters, how many ways can the remaining digits
be chosen?
84
504
3,024
60,480
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Answers: 2
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