What always comes into a house through the keyhole?

Spot 5 differences in two Christmas tree below:

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

Can you decipher the two rows to find the hidden word?

What have one eye but still cannot see?

Can you find out the number of the parking space in which the car is parked?

Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy.

The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth.

John says: Jonny is a bureaucrat
Jacob says: John is a king
Jonny says: I am a Spy

Tell me, Who is the king, who is the bureaucrat, and who is the Spy?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?