SOLUTION: lock combinations are made by using 4 digits. how many different lock combinations can be made if repetition of digits is allowed?

Algebra ->  Probability-and-statistics -> SOLUTION: lock combinations are made by using 4 digits. how many different lock combinations can be made if repetition of digits is allowed?      Log On


   

Question 299382: lock combinations are made by using 4 digits. how many different lock combinations can be made if repetition of digits is allowed?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
10*10*10*10
= 10000