If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

What is the below Rebus indicate?

Count the number of triangles in the below picture?

John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

What's a single-digit number with no value?

A farmer and his neighbour once went to Emperor Akbar"s court with a complaint. "Your Majesty, I bought a well from him," said the farmer pointing to his neighbour, "and now he wants me to pay for the water."
"That"s right, your Majesty," said the neighbour. "I sold him the well but not the water!"?
The Emperor asked Birbal to settle the dispute. How did Birbal solve the dispute?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Why did the Girl throw the butter out of the window?