81 x 9 = 801. What must you do to make the this equation true?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

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

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

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

How many sides does a circle have?

Keyboard words are not in alphabetical order, Why?