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.

What happened when the wheel was invented?

what does this picture(rebus) riddle means ?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Move four matchsticks to the below square to form three squares?

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

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

There was a strange boy who was born before his father. How can this be possible?