John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

I cannot talk, but I always reply when spoken to. What am I?

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

What has lots of eyes, but can’t see?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

When it is alive we sing, when it is dead we clap our hands. What is it?