SOLUTION: lock combinations are made by using 4 digits. how many different lock combinations can be made if repetition of digits is allowed?
Algebra.Com
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) (Show Source): You can put this solution on YOUR website!
10*10*10*10
= 10000
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