People put me on the table and cut me but do not eat me. What am I?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

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.

Can it be possible to build a house that has all its four walls facing towards the South?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I