What Time Should the last watch show in the below figure?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Which number should replace the question mark?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

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

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

What has one letter and starts with an E?