A man plots the murder of his wife. His plan is full proof. Nobody saw them leaving their house. He stabbed her with a knife while driving. She died on the spot. He threw her body in a valley. He threw the knife carefully wiping his finger prints on a random garbage bin. Then he went back to his home and no one was watching him this time as well.

After an hour, he was called by the local police department who informed him that his wife was murdered. They asked him to reach the scene of crime immediately. But as soon as he arrived at the crime scene, he was arrested by them.

How did the police know that he himself is the murderer?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

If an electric train is travelling south, then which way is the smoke going?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

Can you solve this picture maths equation?

I have no life, but I can die. What am I?

What kind of storm is always in a rush?

Before Mount Everest was discovered, what was the highest mountain in the world?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Count the squares in the matchstick puzzle below?