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

How many Watermelons are there in the below picture?

Our product and our sum always give the same answer. Who are we?

Why are all black people so quick ?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

This was asked in an interview with Coa-Cola.

The interviewer has given me 100 marbles(50 white and 50 black) and two empty boxes.
He then told me that he will leave the room and i need to place all the marbles in two boxes.

And When he come back, he will draw a marble from any of the two box and if the marble is white I will be hired.

Also
* No box can be empty.
* All 100 marbles must be placed in one of the two boxes.

So what should I have done?

Identify the hidden meaning behind this picture?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

How many triangles can you find in this given picture?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?