India, May 17 -- In a world where attention spans are shrinking and endless scrolling has become the norm, brain teasers have found a fascinating niche online. These bite-sized puzzles are short, deceptively challenging, and offer just enough of a mental workout to make you pause, think - and, quite often, groan in frustration.

(Also read: IQ test: Crack this challenging maths puzzle to prove you're next-level smart)

If you're a fan of mind-bending challenges, prepare to be perplexed. A recent teaser shared by the X (formerly Twitter) account "Brainy Quiz" is the latest to stump social media users. The puzzle reads:

"2 = 10, 4 = 20, 6 = 30, 10 = ??"

Check out the puzzle here:

At first glance, it seems almost too easy - a straightforw...