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.

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

How many bananas can you eat if your stomach is empty?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Solve the mathematical equation in the picture below.

We know that money can be names differently for the purpose it is used for. Some of the examples of money given at following places or for following activities:

In temple = Daan
In school = Fees
During marriage = Dowry
For divorce = Alimony
Paying government = Tax
In court = Fine
Employer to employee = Salary
To kidnappers = Ransom
For illegal reason = Bribe
To civil servant retirees = Pension

Do you know what do we call the money a husband gives to his wife?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?