Brainteaser Interview Questions

This list of Brainteasers is brought to you by Gabe M., a summer analyst with Bear Stearns. Feel free to post a comment if you know the answer to these questions. I will add more questions to this list in the coming month.There are 100 people in line to board a train. Each person is holding a ticket corresponding to both his place in line and his seat (i.e. Person 1 is supposed to sit in Seat 1,