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Brain teaser: This simple but tricky maths puzzle has left even experts baffled. Can you solve it?

A maths brain teaser on X puzzled users with tricky equation.

Published on: Feb 27, 2025 2:30 PM IST
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Brain teasers have always intrigued people, pushing them to think beyond the obvious. From optical illusions to age-based puzzles, these mind-challenging riddles come in many forms. However, maths-based brain teasers seem to be the ones that truly spark curiosity and debate online.

A maths brain teaser perplexed the internet as users debated the correct answer. (X/@brainyquiz_)
A maths brain teaser perplexed the internet as users debated the correct answer. (X/@brainyquiz_)

(Also read: If you spot the hidden horse in this tricky image, you'll be titled optical illusion expert of the day)

If you're a fan of tricky maths puzzles, then we have a challenge that might just leave you scratching your head!

The puzzle that’s stumping users

A brain teaser shared on X (formerly Twitter) by the account @brainyquiz_ has gone viral, leaving many users puzzled. The simple-looking equation reads:

"5 × 30 ÷ 3 = ?"

Check out the puzzle here:

At first glance, it may seem like a straightforward maths problem, but many people are getting different answers. The key lies in following the correct order of operations, commonly known as BODMAS/BIDMAS (Brackets, Orders, Division and Multiplication, Addition and Subtraction).

Some users instantly arrived at 50, while others debated over alternative solutions, making this seemingly simple equation a trending topic online.

Another confusing challenge

This isn't the first time a brain teaser from this account has left people stumped. Earlier, @brainyquiz_ had shared another puzzling sequence that sparked heated discussions:

"10 + 10 = 10, 20 + 20 = 60, 30 + 30 = 120, 40 + 40 = ??"

The unconventional pattern had many users scratching their heads, trying to decode the hidden logic. Some believed it followed a mathematical sequence, while others suspected it was designed to mislead.

(Also read: Only a true puzzle master can crack this tricky maths riddle that even stumped the experts)

Why the internet loves brain teasers

Puzzles like these have become a favourite pastime for social media users. They not only provide entertainment but also help improve problem-solving skills, logical thinking, and concentration. Many people enjoy competing to solve them quickly and share their answers in the comments.

So, are you up for the challenge? Try solving these brain teasers.

  • Mahipal Singh Chouhan
    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.Read More

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