India, Aug. 17 -- A viral brain teaser on the internet has left people confused. At first glance, the image seems like a big triangle divided into smaller sections. But the challenge is deceptively simple: how many triangles can you spot in this picture?

What seems like an easy question has stumped most people online. Most people can get the answer wrong on their first try. Only one in 20 observant minds can manage to correctly count all the hidden triangles. The brain teaser was shared on Instagram by user mathematicshub01.

The puzzle asks viewers to look beyond the obvious. While you might initially notice the large outer triangle and the smaller ones inside, the trick lies in identifying every possible three-sided shape, both small a...