Can it be possible to build a house that has all its four walls facing towards the South?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

What is the fastest way to double your money?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

Find the number of squares in the below-given picture.

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

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

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?