Complete the table series riddle by finding the number that can replace "??".

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

There was a strange boy who was born before his father. How can this be possible?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

What is at the end of a rainbow?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?