Can you spot the man between the coffee bean in the picture below ?

Keyboard words are not in alphabetical order, Why?

Find the next number in the sequence

5 12 24 36 ?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

What has to be broken before you can use it?

Look at the picture and find out which square is not linked with any of the other squares.

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.