If it took eight men ten hours to build a wall, how long would it take four men to build it?

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

What number comes next in this sequence:
7 8 5 5 3 4 4 _

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

My location can be determined by the below rebus.
So where am i ?