If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

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?

Whats the next number in the below number sequence pattern.

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

Solve The below Equation:

ALFA + BETA + GAMA = DELTA

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Take away the whole and some still remain. What is it?