SOLUTION: There is a locker lock with the digits 1-6 on it. What is the probability of 1-5-3-4 being right?

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Question 448502: There is a locker lock with the digits 1-6 on it. What is the probability of 1-5-3-4 being right?
Found 2 solutions by ewatrrr, Alan3354:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi 

There is a locker lock with the digits 1-6 on it. 

 nPx = n%21%2F%28n-x%29%21%29    6P4 = 6!/2! = 360 different combinations w/o repeating digits

P(1-5-3-4) =  1/360

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If numbers can be repeated, eg, 1111, then there are 6^4 possibilities
= 1296
--> 1/1296