How Many Combinations Are Possible for a 4-Digit Jet Ski Security Code?

[daniel3777]

i was wondering how to calculate the posibilities that a security code could be. For instance if a jet ski security code consists of 4 numbers. each digit can be any number 1 through 5.

how many combinations can that make?
p.s. - I am not trying to steal a jet ski; I am just wondering.

 

[Muzza]

Apply the multiplication rule. You have 5 choices for each digit in the code, and there are 4 digits. There are 5*5*5*5 = 5^4 = 625 possibilities.