If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?

Can you name an animal whose killing cannot be performed without spilling your own blood?

How many words can a pen with half refill write?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

How many sides does a circle have?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

Which number should replace the question mark?