What am I?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

The more of this there is, the less you see. What is it?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Wednesday, Steve and Pam go to a restaurant to eat lunch. After eating lunch, they pay the bill. But Steve and Pam do not pay the bill. So…who does?

Who has married many women but was never married?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?