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.
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.

(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.
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. He primarily covers offbeat, trending and human-interest stories, with a focus on emerging social media trends, online conversations and real-world incidents that capture public attention. At Hindustan Times, Mahipal works on identifying and developing fast-moving digital stories, adding context and journalistic perspective to viral moments while maintaining accuracy, clarity and readability for online audiences. Before joining Hindustan Times Digital, he was associated with DNA India, where he gained experience in newsroom workflows and digital storytelling. He holds a degree in Journalism and Mass Communication from the Vivekananda Institute of Professional Studies, Delhi. Beyond journalism, he has a keen interest in history and sports and enjoys expanding his general knowledge.Read More

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