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This mind-bending brain teaser has stumped the internet. Only true maths geniuses can solve it

A maths puzzle left Facebook users scratching their heads as they tried to solve the tricky equation.

Published on: May 11, 2025 07:00 PM IST
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In an age of constant scrolling and digital distractions, brain teasers have emerged as an unexpected crowd favourite. These deceptively simple puzzles, often involving basic numbers and operations, ignite a powerful mix of curiosity, competition and satisfaction. From maths equations to visual riddles, these puzzles challenge the brain in creative ways—and social media users can’t seem to get enough. Whether you’re a seasoned puzzle-solver or a casual scroller looking for a quick thrill, these teasers offer a mental workout that’s hard to resist.

A maths brain teaser stumped Facebook users. (Facebook/Minion Quotes)
A maths brain teaser stumped Facebook users. (Facebook/Minion Quotes)

(Also read: Brain teaser: You're a next-level genius if you solve this tricky maths puzzle without using calculator)

The puzzle

A brain teaser recently shared on the Facebook page “Minion Quotes” has grabbed the internet’s attention. At first glance, it appears to follow standard arithmetic, but a closer look reveals a confounding twist. The teaser reads:

“1 + 4 = 5, 2 + 5 = 12, 3 + 6 = 21, 8 + 11 = ?”

Check out the puzzle here:

Not just another equation

This isn’t the first time a maths puzzle has gone viral. Another Facebook user, Arshdeep Soni, challenged followers with a brain teaser marked “Only For Genius,” which reads:

11 - 11 × 11 + 11 = ?

The challenge here lies in applying the correct order of operations (BODMAS). Many respondents jumped to conclusions, but the trick is in respecting mathematical precedence. The correct solution surprises many and highlights how easily we can misjudge even familiar principles when presented in a teasing format.

(Also read: Brain teaser: Only 2% of people with out-of-the-box thinking can solve this mind-boggling maths puzzle)

Why brain teasers captivate us

In a world overwhelmed with information, a good puzzle is like a quick jog for the brain. Think you’ve got the logic skills to solve them? Give it a go—but be warned, you may be hooked for hours.

 
ABOUT THE AUTHOR
Mahipal Singh Chouhan

Mahipal Singh Chouhan is a Senior Content Producer at Hindustan Times Digital, with nearly five years of experience in digital journalism and content production. His work primarily focuses on offbeat and trending stories that reflect everyday experiences and evolving conversations on the internet. He has consistently worked on transforming viral content and human interest stories into structured news pieces that engage readers while maintaining editorial clarity. At Hindustan Times, Mahipal contributes to identifying and developing stories emerging from social media trends, online communities, and real-world incidents that capture public attention. His approach involves adding context and journalistic perspective to fast-moving digital narratives, helping present viral moments in a clear and reader-friendly format suited for digital audiences. Before joining Hindustan Times Digital, he was associated with DNA India, where he gained experience in newsroom workflows and digital storytelling practices. Mahipal holds a degree in Journalism and Mass Communication from the Vivekananda Institute of Professional Studies, Delhi. He is particularly interested in tracking emerging trends and understanding how online conversations evolve into broader public discussions. His work reflects a focus on accuracy, readability, and relevance in the rapidly changing digital news environment. Outside of his professional responsibilities, Mahipal takes an interest in history and sports and regularly works on improving his general knowledge, which complements his curiosity as a media professional.

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