A father's child, a mother's child, yet no one's son.

Who am I?

When it is alive we sing, when it is dead we clap our hands. What is it?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

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