A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Next Number in the Series,

5, 16, 49, 104, ?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

How can you make number one disappear by adding something to it?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

If an electric train is travelling south, then which way is the smoke going?

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?