A simple quiz that tests one’s logic and intelligence has been going viral in Korea.
It consists of a simple image asking which cup will fill up with coffee first.
While it looks like it might require mathematics or an understanding of fluid dynamics, it’s actually incredibly easy.
Have a look at the image below and try to figure out which cup would fill first (no cheating!).
The answer is cup number 5 because all the other pathways are actually blocked off!
Source: Bada TV