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.

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

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

What does a man do only once in his lifetime, but women do once a year after they are 29?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

What do you call a fish without an eye?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?