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

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

What is so fragile that saying its name breaks it?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

How can you make a TV, a bed, a dog, and a car liquid?

No one wants to have it, but if one got it, he does not want to lose it. What is It?