What always comes into a house through the keyhole?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

What does below chemistry rebus means?

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

Take one out and scratch my head, I am now black but once was red. What am I?

What is both possible and impossible at the same time?

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?

Can you solve the maths in the below-given picture equation?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?