Who is More Economical:
A Physicist or a Mathematician?
Part II

The same three Physicists and Mathematicians, during their trip to Delhi, plan on doing some local sight-seeing. So they take a local train. The three Mathematicians buy one ticket each. The three Physicists buy no tickets at all. When the ticket inspector comes, he stamps on the three Mathematicians' tickets, while the Physicists frantically run around looking for a restroom.

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