My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

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

Who always enjoys poor health?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

What can go through glass without breaking it?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?