Brain teaser: Only a maths mastermind can crack this puzzling equation in under 10 seconds
A brain teaser shared on X left users perplexed, with many struggling to solve tricky maths equations.
Brain teasers are the perfect way to give your mind a workout, and when it comes to maths brain teasers, the challenge is even greater. These tricky puzzles test our logical thinking and problem-solving skills, often leaving us scratching our heads in confusion. If you’re a fan of brain teasers that make you think twice, we’ve got a fresh puzzle for you to solve.

(Also read: You can be maths champion of the day if you solve this tricky brain teaser in 5 seconds)
A new challenge
A recent brain teaser shared on X (formerly Twitter) by the account Brainy Quiz has captured the attention of puzzle enthusiasts. The teaser reads: "90% fail, 3 + 5 = 24, 4 + 6 = 40, 5 + 7 = 60, 9 + 7 = ??"
Check out the puzzle here:
The teaser, which has stumped many, is not your average maths equation. With a series of seemingly random number combinations, it challenges you to think beyond traditional arithmetic rules.
Earlier brain teasers have left users scratching their heads
This isn’t the first time the Brainy Quiz account has shared a mind-bending teaser. Previously, a brain teaser shared by the same account read: "5 × 5 ÷ 5". The puzzle may seem straightforward at first glance, but it’s another example of how simple-looking equations can leave even the most confident problem-solvers perplexed.
As is often the case with such teasers, it’s not just about finding the solution but understanding the logic behind it. In fact, this is the beauty of brain teasers – they push us to challenge conventional thinking and approach problems in new ways.
The internet's obsession with brain teasers
The internet’s love for brain teasers continues to grow, with users from around the world engaging in these mental challenges. Whether it's solving maths puzzles, riddles, or tricky logic games, people love to share and solve brain teasers online. They offer not only a fun and engaging way to test our mental abilities but also create a sense of community as users debate and discuss potential answers.
So, if you're a fan of these mind-bending puzzles, keep an eye on X for more brain teasers that will surely keep you on your toes!
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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