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.

Can you count the number of lines in the below picture?

I cannot talk, but I always reply when spoken to. What am I?

How many sides does a circle have?

What is the word or phrase below?
R | E | A | D

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

In which direction should the missing arrow point?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What is both possible and impossible at the same time?