What does the below rebus riddle means?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

What does this rebus riddle mean?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

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

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

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

What can you serve, but never eat?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?