A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

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

People put me on the table and cut me but do not eat me. What am I?

I have feet, but no legs. Which animal Am I?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?