What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Why are televisions attracted to people?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?