There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

What can you serve, but never eat?

You need to move three matchsticks to form three squares. Can you do it?

Can you name four days which start with the letter 'T'?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

A man is sitting in a bar when a rich man sits next to him. He turns to the rich man and says, “Did you know I know almost every song that has ever existed?”

The rich man laughs. The man then says, “I bet you all the money you have in your wallet that I can sing a genuine song with a lady’s name of your choice in it. The rich man laughs again and says, “OK, how about my daughter’s name, Jamie Armstrong-Miller?” Minutes later, the man collects his cash and the rich man goes home cashless. What song did the man sing?

Can you place six X (crosses) in below board without making three in a row in any way ?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?