Why Aeroplane windows are round?

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

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

Which is the smallest number that you can write using all the vowels exactly once?

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

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.

Can you count the number of quadrilaterals in the picture below?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

Find the next number in the series.
1 10 24 43 67 ?