Put your brain to the test with this interesting number puzzle
Your time to solve this brain teaser starts now…
Brain teasers are fun challenges that are satisfying to solve. If you’re a puzzle enthusiast, here is one that will leave you engaged. It is a simple one where you have to find a missing number. Do you think you have what it takes to solve this puzzle?

The puzzle is posted on X with a simple caption. “Number Puzzle. Apply your intelligence and answer it,” it reads. The visual posted alongside shows different numbers written in rows and columns. All you have to do is find the missing number.
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Take a look at this brain teaser:
The post was shared two days ago. Since then, the post has collected close to 4.9 lakh views. The share has also accumulated nearly 1,000 likes. The tweet has also collected tons of comments from people.
How did X users react to this puzzle?
“2*3 =6 and 6*3 =18. 4*5=20 and 20*5=100. 3*7=21 and 21*3 =147. The answer is 3,” posted an X user. “6 square =36 divided by 2=18. 20 square =400 divided by 4=100. 21 square=441 divided by 147=3,” added another.
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“In the top row the numbers are related by 3x, in the middle row by 5x, and the bottom row by 7x. Since the numbers in the left column are one less than the constant multipliers, my answer is 6,” joined a third. “3. Because in the first row, the numbers of the series are multiplied by 3. In the second row multiplied per 5 and in the third row multiplied per 7,” wrote a fourth.
ABOUT THE AUTHORTrisha SenguptaTrisha Sengupta works as Chief Content Producer at Hindustan Times with over six years of experience in the digital newsroom. Known for her ability to decode the internet’s most talked-about moments, she specialises in high-engagement storytelling that bridges the gap between viral trends and traditional journalism. Throughout her tenure, Trisha has focused on the intersection of technology, finance, and human emotion. She frequently covers personal finance and real estate struggles in hubs like Gurgaon, Bengaluru, and Hyderabad, while also documenting the unique challenges of the NRI experience. Her work often highlights the movements and philosophies of global newsmakers and personalities like Elon Musk, Mukesh Ambani, Nikhil Kamath, Dubai crown prince, and MrBeast. From reporting on Amazon or Meta layoffs and startup culture to the emergence of AI-driven platforms like Grok and xAI, she provides a grounded and empathetic perspective on the stories shaping our world. When not decoding the internet, Trisha is likely offline: lost in a book, exploring a historical ruin, or navigating the world as a solo traveler. She balances her fast-paced career with family time and a healthy dose of curiosity, currently trading her "human" sources for silicon ones as she masters AI to future-proof her storytelling.Read More

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