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

Take away the whole and some still remain. What is it?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

What do you see in the image below

What occurs twice in a week, once in a year but never in a day?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Why despite killing dozens of people Charley and Wilma were not punished?