If it took eight men ten hours to build a wall, how long would it take four men to build it?

What type of tree can I carry in my hand?

There was a strange boy who was born before his father. How can this be possible?

What can go up a chimney down, but can’t go down a chimney up?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

I am quite hot but become too cold if you remove the first two letters. What am I?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

What part of Turkey has the most feathers?

Why do you find that most of the buildings are deprived of the 13th floor?

What 5-letter word typed in all capital letters can be read the same upside down?