A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Which letter of the alphabet has the most water?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

You need to move three matchsticks to form three squares. Can you do it?

By using 'because' continuously three times, can you make an English statement ?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Can you count the number of triangles in the given figure?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

A father's child, a mother's child, yet no one's son.

Who am I?