SOLUTION: How many different three-digit combinations can be made by using the numbers 1,3,5,7, and 9 without repetitions if the "right" combination can open a safe? Does a combination lock

Algebra ->  Permutations -> SOLUTION: How many different three-digit combinations can be made by using the numbers 1,3,5,7, and 9 without repetitions if the "right" combination can open a safe? Does a combination lock       Log On


   

Question 475196: How many different three-digit combinations can be made by using the numbers 1,3,5,7, and 9 without repetitions if the "right" combination can open a safe? Does a combination lock really use combinations?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
5P3+=+%285%21%29%2F%282%21%29+=+5%2A4%2A3+=+60
It actually uses permutation, not combination.