How many numbers can be made with 10 digits

Just wondering because I've forget my phone pin and that's 0-9 digits

there's 9 different numbers, so 10^9
1000000000 different combinations

Sigh.
It's *ten* different numbers possible in each of the 10 digits (0-9).
So that's 10^10 possible numbers.

Peace.

You can't guess it, but 5040. PS it's 4 digits, numbers 0-9

There are 100 different possibilities

good luck!!!!!

since each digit can be 0 to 9

the ans = 10x10x10.... 0r 10^10 a VERY large #