You decide to lock your phone so no one can read your text messages. Using any 4 digits, how many passwords can you make using any number 0-9? (digits can be used more than once)

Question

anonymous · Answer

is that the answer?

anonymous · Answer

Yes, there are 10000 permutations that may be used as password.

anonymous · Answer

what work would i show?

anonymous · Answer

you have ten different digits. If WXYZ is the code,
Each digit can have any place from the WXYZ. So the answer is 10^4