Someone asked me this brainteaser and I can't seem to get it...

Paolo and Kyle were leaving the cafeteria as they passed the cashier, Paolo paid his bill but kyle handed the cashier a slip of paper with the number "1O040180" on it. The cashier studied the number for a moment then let kyle pass by without paying... why?

there are no errors in the question.

Question

Someone asked me this brainteaser and I can't seem to get it...

Paolo and Kyle were leaving the cafeteria as they passed the cashier, Paolo paid his bill but kyle handed the cashier a slip of paper with the number "1O040180" on it. The cashier studied the number for a moment then let kyle pass by without paying... why?

there are no errors in the question.

parthkohli · Answer

I see an error. 1 - O - 0
There's an O and there's a 0.

jlastino · Answer

i told that to the asker but he said it's really O

parthkohli · Answer

This isn't even a number....It has an O

jlastino · Answer

yeah that's what I was complaining about...but nvm i already got it this time haha

radar · Answer

Maybe it was a serial number on currency thus the slip of paper was money

jlastino · Answer

hmmm can be but i think the answer is....i owe nothing for i ate nothing.

parthkohli · Answer

Yeah correct

radar · Answer

O I C   lol

radar · Answer

Reminds me of a message that was shown to me as a youngster.

2ysur2ysub,icur2ys4me.  Did you get the message: