You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?

Which wheel of car does not rotate when you turn your car right?

What word begins and ends with an E, but has only one letter?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle