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

What is the word or phrase below?
R | E | A | D

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

How is a fly different from a mosquito?

A landlord calls both of his sons and tells them that their horses will now decide who will transfer the inheritance. He tells them to race along the land till the end and the one whose horse will be slower will win and be the heir to all the property.

Both of them keep wandering for days but to no result. Then they ask a wise man regarding it. The man advises them on the matter after which they jump on the horses and race as fast as they can till the end. Why did they do it?

What did the wise man say?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

Find out the missing number in the picture attached:

Count the number of lines in the image below ?

I travel all around the world but always stay in the corner. What am I?