India, May 1 -- Whether it's a jigsaw, crossword, or a tricky brain teaser, there's something undeniably addictive about solving puzzles. That moment when everything falls into place brings a sense of triumph - a small but fulfilling mental victory. For many, the real joy lies not just in the solution but in the process: the confusion, the pattern-spotting, and finally, the "aha!" moment.

(Also read: Eye-test challenge: Can you count all the horses in this optical illusion to earn the title of puzzle expert?)

Now, a maths riddle shared by an X (formerly Twitter) user named Ganesh UOR has reignited the internet's love for logical challenges. The puzzle reads:

"IQ Test: 1+4=5, 2+5=12, 3+6=21, 8+11=?"

At first glance, it appears to follo...