Just start at 0000 and end at 9999. It takes awhile in the end I ended up unlocking it.
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Your only solution - is to go through every possible combination from 0000 to 9999 until you find the correct number !
There are 210 4 digit combinations and 5040 different 4 digit codes.
i would like a list all possible 4 digit combination using 0-9
the unit digit is 4
The digit in the hundreds place in the number 463 is the digit 4.