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IQ test: This baffling maths puzzle has everyone guessing. Can you crack it?

A brain teaser with odd equations puzzled users on X.

Updated on: Aug 17, 2025 09:44 PM IST
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Brain teasers have always been a favourite pastime for people who enjoy testing their wits. From riddles to optical illusions, these puzzles have a unique charm that keeps the mind engaged. Now, a fresh maths puzzle shared online has once again left internet users scratching their heads.

A tricky maths puzzle with unusual equations went viral online. (X/@brainyquiz_)
A tricky maths puzzle with unusual equations went viral online. (X/@brainyquiz_)

(Also read: Brain teaser: Can you spot the gift that made her frown in 10 seconds?)

The puzzle that sparked curiosity

The puzzle, posted on Brainy Quiz, reads:

“IQ Test:: 2 + 5 = 35, 5 + 8 = 104, 6 + 9 = ?”

Check out the puzzle here:

Brain teasers like these are not only entertaining but also excellent exercises for the mind. They sharpen problem-solving skills, boost logical reasoning, and encourage creativity. Unlike straightforward equations, puzzles with unusual twists push people to think beyond the obvious.

Online communities add to the excitement, with users on Reddit, Facebook, and quiz forums turning these teasers into collective challenges. People exchange theories, debate possible answers, and sometimes even come up with multiple solutions. This shared curiosity not only strengthens problem-solving abilities but also creates a sense of connection among puzzle lovers.

(Also read: Optical illusion challenge: How many hidden cats can you spot in this image?)

Have you cracked it yet?

Whether or not you find the correct answer, the real joy lies in the process of trying. So, have you managed to solve this mind-bending teaser, or is it still keeping you guessing?

 
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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