Thread: SD Cards ID Numbers

It's a 10 digit field to enter numbers in. That's the limitation and ranging from "0000000000" to "9999999999" in this case with 10 placeholders for {0-9} in each place.
Why should 0's in "1000000000" make it a 10 digit number but disqualify "0000000001" from also being a 10 digit number? The only difference is that we often choose to be lazy and write "0000000001" as value "1" instead and trim/suppress the leading 0's.

Imagine that you have a combination lock with 5 wheels where each wheel is with numbers from 0-9.

If you choose to have your code as
[0][7][2][4][1]
would that suddenly be a combination lock with 4 digits/wheels just because the first one is 0?