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posted by Nina PLEASE Thursday, January 10, 2013 at 8:22am.

A combination lock has 10 dials. To open the lock, you must turn the dial right to the first number, left to the second number. What is the probability that you choose the correct combination?

1/10 Someone can correct me if I'm wrong, but you have 10 dials, 1/10 chances.

assuming the same number can be used on the 2nd turn the number of turns = 10*10 = 100 One of these will be correct prob of correct choice = 1/100

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