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?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

Can you make four (4) nines (9) equal 100?

What goes up but never comes down?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Can you find the thief by just looking at the picture below?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

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