



 
Hi Tim. I have to make some assumptions to give you a numerical answer. First assumption: password characters can be any English alphabetic character or any numeric character (no symbols, spaces, etc). So that means there are 26+10 choices for each character. Second assumption: Your password is as long as it is allowed to be. That means that since 9k7d4112p5o is 11 characters long, then passwords must be at least 1 character and at most 11 characters long. There are 36 possible onecharacter passwords. So the next question is this: I won't show you the derivation (you could just use your calculator too), but the sum like this can be simplified to: So the number of guesses is 36(36^{11}  1)/35 which my calculator says is 135 382 323 952 046 196 or about 135 quadrillion. That would take some time. Cheers,  


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