Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

How can one talk without saying a single word?

Which is faster, Heat or Cold ? Explain.

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

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

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Decipher

yyyy u r, yyyyy u b, i c u r y+y 4 ? by sharks. How would you survive?

Find the smallest sentence with all the English alphabet.