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svet-max [94.6K]
4 years ago
13

Suppose you must choose a 3 digit code for your locker using the digits 0 through 9 and no digit can be used more than once. How

many 3-digit codes are possible?
Mathematics
1 answer:
Elenna [48]4 years ago
4 0

1st digit can be 0-9 = 10 numbers

2nd digit can be 10-1 numbers = 9 numbers

3rd digit can be 10-2 = 8 numbers

10 x 9 x 8 = 720 codes are possible

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