Rob is taller than Edwin, and Jurgen is shorter than Rob.
Of only one of the following statements, we now certainly know it is correct:

A.Edwin is taller than Jurgen
B.Jurgen is taller than Edwin
C.It cannot be determined if Jurgen or Edwin is the tallest.

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

What runs around the whole yard without moving?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

What is harder to catch the faster you run?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?