Can you find the key in the picture below?

Find the missing number in the sequence below:

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?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

How can you leave a room with two legs and return with six legs?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

In which direction should the missing arrow point?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?