Question 84655: A bicycle lock consists of 4 spinners each numbered 0-8. How many different lock combinations could you make if you know the number aren't repeated?
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! If the numbers on the spinners cannot be repeated, then each time you set a number on a spinner, then you can't use that number again. Therefore, there will be 8 possibilities on the first spinner, then (having used up one possibility) there will be 7 on the second spinner, 6 on the third spinner, and only 5 on the third.
The number of possibilities will be
8*7*6*5 = 1680 possible combinations.
R^2 at SCC
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