Can you decipher the below rebus?

PBLUESAISNUERSES

A man dies of old age on his 25 birthday. How is this possible?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

The centre of the third figure is empty. What digit should fit inside?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Solve the puzzle by telling what does below picture means.

There is something which is always coming but never arrives?

What is the coolest letter in the alphabet?

What does below chemistry rebus means?