Tickets for a train ride
Three economists and three mathematicians were going for a trip by train.
Before journey mathematicians bought 3 tickets (they could count to three)
and economists only one.
Mathematicians were glad their stupid colleagues were going to pay a fine.
However when the conductor was approaching their compartment, all three
economists went to the nearest toilet.
Conductor noticing that somebody is in the loo knocked to the door
and in reply saw a hand with the ticket. He checked it and economists
saved 2/3 of the ticket price.
Next day mathematicians decided to use the same strategy- they bought only one
ticket, but economists did not buy tickets at all.
When mathematicians saw conductor they went to the loo, and
when they heard knocking they handed in the ticket. They did not get it
back.
Why? The economists took it and went to the other toilet.
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