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?

During which month do people sleep the least?

What's the only room from which no one can enter or leave

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

The centre of the third figure is empty. What digit should fit inside?

One evening there was a murder in the home of a married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

What does this simple rebus mean?