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.

Which number comes next in the number series?

2, 9, 30, 93, ?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

What kind of band never plays music?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

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

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?