Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

A sundial has the fewest moving parts of any timepiece. Which has the most?

The more it dries, the wetter it becomes. Can you tell what it is?

If you say my name, I will no longer exist. What am I?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?