India, May 24 -- In an age of endless digital distractions, brain teasers have carved out a captivating niche on social media. These short, often deceptively simple puzzles have become a favourite among internet users seeking a quick mental challenge. From logic-based questions to optical illusions, they test more than just intelligence-they demand patience, sharp attention to detail, and lateral thinking.

(Also read: Logic test: Can you crack this mind-bending brain teaser that's puzzled the internet?)

Now, one such brain teaser shared on Facebook has left users baffled.

The riddle, posted by the Facebook page Minion Quotes, presents an age-related question that appears straightforward at first glance. The post reads: "90% fail to ans...