What do you call a fish without an eye?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

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?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Using Only Five 5's and any mathematical operator make sum as 37

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Before Mount Everest was discovered, what was the highest mountain in the world?