New Delhi, July 1 -- Some people scroll past puzzles. Others stop, squint, and dive in. If you're the second type, then you might just be a math legend. There's a new viral math brain teaser that's testing how fast people can solve a logic-based equation-and it's got the internet talking. The challenge? Solve it in just five seconds.

That's right. Just 5 seconds.

So before we break down the puzzle, ask yourself: How sharp is your brain? Let's find out.

Brain teasers aren't just for fun. They push you to think differently. Whether it's spotting a hidden number in an image or figuring out a tricky equation, your brain gets a solid workout. They help improve things like:

Logical thinking

Pattern recognition

Memory and attention

Mental...