When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

What month of the year has 28 days?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

What has one letter and starts with an E?

Eight of us go fourth, not back, to protect our king from an attack. What are we?