A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

What kind of storm is always in a rush?

What is at the end of a rainbow?

Can you spot the man between the coffee bean in the picture below ?

Prove that twice of ten is the same as twice of eleven.

Why did the Girl throw the butter out of the window?