How many triangles are there in this photo?
After this challenge was shared by Doctor ASKY on Facebook, it received over 11,000 comments debating the correct number of triangles, ranging from 4 to 44.
There are six triangles in each of the four rows, plus the main triangle. Some even included the one in the artist's signature and the word "triangle."
Check out this Quora thread discussing all of the possible answers, including a helpful diagram by mathematician by Martin Silvertant that shows how he got 25.
This, Ladies and gentleman, this is the reason why smart people can pretend to be stupid, but stupid people can never successfully pretend to be smart.
PS: the person that made the image did not understood the riddle.