How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

What does this rebus mean?

O
N
C
E
TIME

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

You can hear me, but you can't touch or see me.

What am I?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Can you make a six-letter word using the letters N, A and B ?

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?