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.

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

What will you call your mother's brother's brother-in-law?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

How do you go from 98 to 720 using just one letter?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?