India, June 20 -- Brain teasers have long captivated audiences, offering a compelling blend of challenge, logic, and the satisfaction of solving a tricky puzzle. From optical illusions to numerical riddles, social media is flooded with mind-bending challenges that keep users guessing-and frequently debating their answers. Now, a new mathematical brain teaser has surfaced as the latest to leave users stumped.

(Also read: Brain teaser: If you crack this confusing maths riddle, your IQ level is officially genius-tier)

Shared on X (formerly Twitter) by the account @BholanathDutta, the riddle reads:

"1 + 1 = 4, 2 + 2 = 8, 3 + 3 = 12, 5 + 5 = ?"

Check out the puzzle here:

At first glance, the equation appears illogical-but that's exactly t...