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VladimirAG [237]
4 years ago
12

A 4-digit password is a number that begins with a 3 and does not contain a zero or nine. If digits can be repeated, how many pos

sible passwords are there?
1,536
512
343
Mathematics
2 answers:
PSYCHO15rus [73]4 years ago
8 0

The correct answer is 512

alekssr [168]4 years ago
6 0
512 i think.............
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