The image shared above depicts a picture puzzle in the form of values in and around triangles. The task for you is to identify the number that will be filled in the last triangle. This tricky ...

Now, more than 122 years after it was first proposed, Kamata and two other mathematicians have finally proved that a solution ...

As another two weeks passed, the puzzle columnist confirmed that ... the mathematicians found that there were an infinite number of ways to cut up the triangle in this solution.