A brain teaser that has gone viral online challenges people to count the number of triangles in it. There are more than 20 triangles. Can you count them all? Brain teasers take on diverse shapes and ...

Math puzzles have a special way of making even the sharpest minds stop and think. A new brain teaser going around online has been challenging people to figure out the pattern hidden in a series of ...

Brain teaser: It may look easy, but this challenge is trickier than it appears to be, packed with hidden triangles that most people miss on the first try. A viral brain teaser on the internet has left ...