If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

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

Count the squares in the matchstick puzzle below?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

When it's bad luck to meet a black cat?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

You walk into an old horror house. It has no power or plumbing. Once inside, you see three doors. Each door has a number on it. Behind each door is a way for you to die. Behind door number one, you die by getting eaten by a lion. Behind door number two, you die by getting murdered. Behind door number three, you die by an electric chair. You can’t turn back, so you have to go through a door. Which door do you go through?

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