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

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Next Number in the Series,

5, 16, 49, 104, ?

The Little ant seems to be always confused. Do you know why?

Solve the puzzle by telling what does below picture means.

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?