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

Shyla was sleeping in her apartment when suddenly a robber broke into her house. He asked her to stay quiet and started looting the cash and jewelry. Suddenly the landline phone started ringing. The robber pointed a gun at Shyla and asked her to pick up and talk without giving away the situation.

She picked up the phone and it happened to be her husband. She spoke, Is it an emergency darling? Do give me a call when your flight lands, I will prepare your favorite food that will help you relieve the stress. Then she hanged up.

10 minutes after, the police arrive at the scene and catch the robber. How did the police know about the robbery?

What has lots of eyes, but can’t see?

Can you place three balls such that the equation shown in the picture holds true?

What is the next number in the series?

15 29 56 108 208 ?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

The more you take me, the more you leave me behind.
Who Am I?