Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

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

Keyboard words are not in alphabetical order, Why?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

Why do you find that most of the buildings are deprived of the 13th floor?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?