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.

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

There is something which is always coming but never arrives?

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

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

What goes up but never comes down?

What kind of tree can you carry in your hand?