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>I've actually encountered keypads where the order didn't actually matter If the order really doesn't matter, then that counts combinations twice (1234, 1243..
by mappu 14y ago
>I've actually encountered keypads where the order didn't actually matter
If the order really doesn't matter, then that counts combinations twice (1234, 1243..). There are 10000 possible 4-digit codes, 5040 permutations, and actually 210 combinations.
- rogerbinns 14y agoYou haven't taken into account that by looking at the keypad you can tell which digits are actually used.