SOLUTION: how many different codes of 4 digits are possible if the first digit must be 3,4, or 5 and if the code may not end in 0?
Algebra ->
Permutations
-> SOLUTION: how many different codes of 4 digits are possible if the first digit must be 3,4, or 5 and if the code may not end in 0?
Log On
Question 624063: how many different codes of 4 digits are possible if the first digit must be 3,4, or 5 and if the code may not end in 0? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! how many different codes of 4 digits are possible if the first digit must be 3,4, or 5 and if the code may not end in 0?
---------
3*10*10*9
