Brain teaser: You'll secure genius-level status, if you crack this baffling maths riddle
A tricky brain teaser shared on X puzzled many with its mathematical twist, challenging users to think beyond logic.
Brain teasers have long been a favourite pastime for those who enjoy testing their mental agility. From puzzles that leave you scratching your head to mathematical challenges that push your reasoning to its limits, brain teasers come in all shapes and sizes. While some aim to confuse, others challenge your logic, and a few make you question everything you know.

(Also read: Only those with sharp logical skills can solve this tricky maths puzzle that 99% of people fail to crack)
If you’re a fan of such challenges, we’ve got something special for you—a new brain teaser that combines maths with an extra layer of difficulty.
A new mathematical challenge
Shared on X (formerly known as Twitter) by an account named Brainy Quiz, this latest brain teaser has people hooked. The puzzle reads:
13 → 10, 26 → 40, 39 → 90, 52 → ?
Take a look here at the puzzle:
On the surface, it appears straightforward, but its underlying logic has left many puzzled. While some enthusiasts have cracked the code, others are still scratching their heads, trying to connect the dots.
A look at past puzzles
This isn’t the first time Brainy Quiz has intrigued social media users with its clever conundrums. A previous teaser from the same account read:
“99% Fail, 2 x 3 = 9, 3 x 4 = 16, 4 x 5 = 25, 5 x 7 = ?”
The unique twist in these puzzles lies in their ability to challenge conventional mathematical operations, forcing solvers to think outside the box.
(Also read: Brain teaser: If you crack this tricky number pattern, you'll earn the title of puzzle master)
Why are brain teasers popular?
Brain teasers are more than just a fun diversion; they are a mental workout that sharpens analytical skills and enhances problem-solving abilities. They also bring people together, fostering lively discussions and debates as they try to decipher the logic.
As brain teasers continue to trend online, they serve as a reminder that sometimes, the most challenging problems can be the most rewarding to solve. So, if you haven’t tried your hand at the latest puzzle, what are you waiting for?
ABOUT THE AUTHORMahipal Singh ChouhanMahipal 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.Read More

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