What is harder to catch the faster you run?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

Replace the question mark with the correct number in below Picture:

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

No matter how little or how much you use me, you change me every month. What am I?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

Our product and our sum always give the same answer. Who are we?

There is a place where if I stand up straight, I will still be considered sideways.