Why do people go to bed?

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

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

What work can one never finish?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

Out of four images which one is the odd one out?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?