Permutation Lock
by Erick Lee
64
skips
skips
36
questions
questions
Sequel


What's the least number of turns you could make if you wanted to try every possibility (you were repeating some numbers)?




what is the average number of combinations a person would have to try to break into that lock





If you knew one number from the combination, how many fewer combinations would you have to try?




How many different combinations? How long will it take to try them all?











How long would it take, on average, to break into this lock by going through the combinations?










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