A stranger walks into a bar and puts a pound coin on the counter and asks for half a pint of bitter. The barmaid asks him whether he would like Guinness or Worthington. The stranger asks for Guinness. Another complete stranger comes into the bar, puts a pound on the counter and also asks for half a pint of bitter. The barmaid immediately pulls half a pint of Guinness. How did she know what the second man, who was completely unknown to her, wanted?
(think in a crooked way for this one)
the amount of money the second guy put down. It depends on how much the Guinness costs compared to Worthington. The first guy put down a pound and the second guy put down 50 pence then 5 10 pences. That would mean that he wanted a Guinness not a Worthington.
Solution
