Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

How many triangles can you count in the figure given?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

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?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

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?

Why are televisions attracted to people?