Can you find the missing piece of the Porsche?

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

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

What do you answer even though it never asks you questions?

Can you name four days which start with the letter 'T'?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day