A woman in a yellow coat is seated next to a standing man in a red jacket in a diner .
It is certain that the woman finishes her meal while the man goes to pay the check .
Chances are about even that the woman finishes her meal while the man goes to pay the check .
It is certain that the woman finishes her meal while the man goes to pay the check .
The woman finishes her meal while the man goes to pay the check .