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.

The centre of the third figure is empty. What digit should fit inside?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

What always comes into a house through the keyhole?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

2, 3, 5, 9, 17, _ What is the next number in the sequence?