What number should come in place of the question mark below?

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

What can you see in the middle of March and April that you can never see in any other month?

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

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

John was drowned by he was not wet. How?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?