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

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

What does it mean?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

There is a place where if I stand up straight, I will still be considered sideways.

Replace the question mark with the correct number in below Picture:

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

What word is pronounced the same if you take away four of its five letters?

When we see 2 but call 10?

Three cars are driving on a track that forms a perfect circle and is wide enough that multiple cars can pass anytime. The car that is leading in the race right now is driving at 55 MPH and the car that is trailing at the last is going at 45 MPH. The car that is in the middle is somewhere between these two speeds.
Right now, you can assume that there is a distance of x miles between the leading car and the middle car and x miles between the middle car and the last car and also, x is not equal to 0 or 1.
The cars maintain their speed till the leading car catches up with the last car and then every car stops. In this scenario, do you think of any point when the distance between any two pairs will again be x miles i.e. the pairs will be x distance apart at the same time ?