Can you convert the number zero(0) into a positive number using just one mathematical operator ?

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

How can you take 2 from 5 and leave 4?

You Are Highly Attentive If You Can Spot A Hat In This Bathroom In 9 Seconds!

How can you make a TV, a bed, a dog, and a car liquid?

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?

Can you name some countries which do not have the alphabet 'A' in them?

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

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?