It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

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 word does the below Plexor means ?

The more it dries, the wetter it becomes. Can you tell what it is?

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

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What does this Rebus Picture mean?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

How can a man go eight days without sleep?