A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

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

What does this rebus means ?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

What does this mathematical rebus means ?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?