In a world where equations always have a logical solution, here’s a puzzle that defies traditional rules. Forget the conventional calculations: the answer does not necessarily lie in the numbers themselves, but in how you perceive them.
The Challenge Of The Day: A Riddle That Seems Impossible… But Isn’t!
At first glance, this may seem nonsensical. Yet, there is a genuine logic at play, though it might not be where you’d expect it to be.
Take a good look at these mysterious equations:
Why Is This Puzzle So Engaging?
Because it doesn’t test your math skills but your ability to think outside the box. Here’s what it reveals about our way of thinking:
It Breaks Functional Fixedness
Our brains are wired to see numbers as tools for calculation. However, here, they could represent something else. This ability to shift perspectives makes all the difference between a rigid mind and a creative one.
It Awakens Creativity
You don’t need to be a genius; just a bit of imagination to see what others cannot. This is a valuable skill, both for solving workplace problems and for innovating in daily life.
It Reminds Us That Simplicity Is A Strength
In a complex world, we often believe that solutions must be complicated as well. Yet, the most elegant answers can sometimes be surprisingly simple.
It’s A Fun Mental Workout
No pressure, no timer (unless you set one!). Just the joy of stimulating your neurons, taking a break from the stream of information, and remembering that thinking can be a game.
Lateral Thinking: The Secret Tool Of Brilliant Minds
This type of riddle calls upon what is known as lateral thinking, a method popularized by Edward de Bono.
The idea? Don’t settle for the obvious solution, but explore unexpected paths.
- A person who turns a problem into an opportunity?
- An entrepreneur who revolutionizes a market?
- A parent who finds a clever trick to simplify everyday life?
They all share a common trait: they know how to change their perspective.
Why Try It?
Because these little challenges are much more than just a pastime:
- They Strengthen The Mind: Like a muscle, the brain needs varied exercises.
- They Can Reduce Stress: Focusing on a riddle is a form of active meditation.
- They Make You Smarter In Daily Life: The next time a problem seems unsolvable, you’ll remember: “What if I changed my point of view?”
The Solution? It Awaits You!
So, are you ready to find the answer?
Take your time, have fun, and let your intuition guide you.
And once you’ve found it (or if you’d like a nudge!), share this challenge with others. There’s nothing quite like a good riddle to spark conversation, energize a team, or simply enjoy an intelligent and playful moment.
Here Are The Solutions We Found:

Step 1: Check Standard Multiplication
- 11 × 11 = 121 → that’s not 4
- 30 × 20 = 600 → that’s not 5
Thus, it’s a hidden logic, not standard multiplication.
Step 2: Look For A Pattern
Let’s test the sum of the digits of the multiplied numbers:
- 11 × 11 → 1 + 1 + 1 + 1 = 4
- 30 × 20 → 3 + 0 + 2 + 0 = 5
- 15 × 10 → 1 + 5 + 1 + 0 = 7
So the logic seems to be:
Result = sum of the digits of the two multiplied numbers
Step 3: Apply To The Last Example
- 24 × 13 → 2 + 4 + 1 + 3 = 10
Final Answer
24 × 13 = 10
Another Possible Solution
So, what is 24 × 13?
Answer: 9 – this relates to the number of letters in each multiplication: 11 × 11 = “eleven times eleven” = 4 letters for “eleven” + 4 letters for “eleven” = 8, but counting the letters in “four,” we get 4. 30 × 20 = “thirty times twenty” = 5 letters for “five.” 15 × 10 = “fifteen times ten” = 7 letters for “seven.” 24 × 13 = “twenty-four times thirteen” = 9 letters for “nine.”
And after? If you enjoyed this puzzle, know that there are thousands out there: logic games, mysterious sequences, visual riddles… All great ways to keep your mind sharp, your curiosity alive, and your perspective fresh.
So if you liked this test, don’t forget to take on more puzzles or challenges in our recommended reading section by clicking here.

