Hint: Here having total two diagonals and having four blocks. So formula for that 4 x 2 = 8 number of triangles. Figure – 2 : Number of triangles in Fig – 2 = 16 Hint: Here having total two diagonals ...

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 ...

A new visual puzzle is making waves online, and it is much trickier than it looks. At first, it seems like a simple shape made of stacked triangles. But once you start counting, you may find yourself ...

Counting will get you nowhere. Try a little combinatorics instead. By Kenneth Chang A couple of weeks ago, I wrote about a viral math problem — 8÷2(2+2) = ? — that drew the disdain of many ...