random
posted by y912f on .
How many 4 digit combinations can you get using numbers 09..?

If zero is allowed to be a leading digit, then
10*10*10*10 if numbers can be repeated. 
Yeah, I figured it's 10,000..but I'm trying to see if there are all 10,000 combinations online somewhere. I doubt it though.

you can write them down in a few hours.
start with
0000
0001
0002, and so on. Have fun. 
I tried, It just confused me even more haha