Looking for a fun way to stretch your brain today? Logic puzzles are the perfect mix of challenge and entertainment. Whether you’re a puzzle pro or someone who loves solving riddles during coffee breaks, this number puzzle is sure to keep you on your toes. It looks simple—but don’t let that fool you. This brain teaser is designed to test your pattern recognition and logical thinking.
So, are you up for the challenge? Let’s dive into the puzzle and see if you can figure out the missing number.

The Puzzle That’s Breaking the Internet
Here’s what you’re working with:
- Row 1: 1, 2, 3
- Row 2: 2, 4, 6
- Row 3: 3, 6, ?
At first glance, it might just seem like another number sequence, but if you stop and think, there’s a clear and consistent logic hiding in plain sight.
The big question is: What number completes the third row?
Video: Give yourself a joyful break with these delightful mental challenges!
Why Number Puzzles Are Good for Your Brain
Before we reveal the answer, let’s talk about why puzzles like this matter. These quick logic challenges may seem like just a fun distraction, but they actually:
- Improve your analytical thinking
- Boost your problem-solving skills
- Help you recognize patterns faster
- Give your brain a mini workout—without needing a gym
It’s like mental cardio. The more you solve, the sharper your thinking gets.
Common Mistakes People Make With This Puzzle
The number one mistake? Overcomplicating things.
A lot of people try to apply random math operations like subtraction or division when the answer is staring them right in the face. Others focus only on one row at a time, missing the consistent vertical pattern across all three.
Another slip-up is assuming the numbers have to follow a traditional sequence, like Fibonacci or arithmetic progression. But logic puzzles don’t always play by the usual rules—they force you to look from new angles.
Here’s a Hint: Think Multiplication, Not Magic
When you stop overthinking and simply break down each row, the solution becomes obvious.
Let’s look closer:
- Row 1: 1, 2, 3
These are just multiples of 1.
1×1 = 1
1×2 = 2
1×3 = 3 - Row 2: 2, 4, 6
These are multiples of 2.
2×1 = 2
2×2 = 4
2×3 = 6 - Row 3: 3, 6, ?
So what’s next?
3×1 = 3
3×2 = 6
3×3 = 9
That’s it! The missing number is 9.

Step-by-Step Guide to Solving This Puzzle
If you want to get better at puzzles like this, here’s a quick strategy to follow:
1. Scan Each Row or Column for Patterns
Are numbers increasing by the same amount? Are they doubling or being squared? Look for consistent changes.
2. Test Common Mathematical Operations
Addition, subtraction, multiplication, division—run through each to see what sticks.
3. Work Vertically and Horizontally
Don’t just read across rows. Sometimes the key lies in how numbers line up vertically.
4. Don’t Rush—Think Simply
Some puzzles look more complicated than they are. Start with basic math before jumping to conclusions.
Why the Answer Is Satisfying to Spot
When you finally see the pattern, it just clicks. There’s something incredibly rewarding about cracking a code on your own. It’s like unlocking a little mental achievement. You start to see numbers differently—and that’s the beauty of these challenges.
Plus, once you get the hang of it, it opens the door to more advanced puzzles that stretch your logic even further.
Can You Solve More Puzzles Like This?

Absolutely! If this one gave you a buzz, you’re going to love diving deeper into the world of logic games and number riddles. From Sudoku and magic squares to sequence puzzles and cryptic math problems, there are endless ways to build your brainpower—one challenge at a time.
You can even make it a daily habit. Try solving one logic puzzle each morning to wake up your brain faster than coffee.
Conclusion: The Power of Thinking Differently
So, did you solve the missing number challenge on your own? Whether you got it in seconds or needed a little push, the point is you exercised your brain—and had fun doing it.
The answer, as we discovered, is 9—a simple result of a multiplication pattern hiding in plain sight. But the real win here isn’t just the correct answer. It’s the fact that you stepped outside the obvious, looked at the numbers differently, and applied logic to find a solution.
That’s what critical thinking is all about. And guess what? The more you train your brain this way, the more confident and sharp you’ll feel in everyday problem-solving.
Now it’s your turn—share this puzzle with a friend and see who solves it faster. Ready for the next challenge? Let’s keep the brain games rolling!