A Little Logical Challenge to Stimulate Your Mind!
At first glance, this sequence of numbers seems familiar, almost mundane. A simple progression, perhaps even obvious. Yet, behind this apparent simplicity lies a subtle mechanism that pushes you to think differently.
The Art of Uncovering the Obvious
This puzzle is not based on a straightforward arithmetic operation. No, the real trick is to discover the hidden rule that gives meaning to this sequence.
It’s not just about addition or multiplication, but rather a mix, an order to be found.
A Test to Enhance Your Analytical Skills
Here is the sequence:
Your mission?
Find the number that completes this sequence.
This exercise tests your ability to think differently, to observe the numbers not in isolation but in relation to one another.
A Nod to Curiosity

Albert Einstein said that the true sign of intelligence is not knowledge but imagination.
These puzzles are designed to do just that: stimulate your mathematical creativity, push you off the beaten path, and rediscover the joy of reasoning.
So, Are You Ready to Take on the Challenge?
Before reflexively searching for the solution, take a moment. Look at this sequence as a puzzle where each piece has a specific place.
And most importantly, have fun, because that’s the secret to successful puzzles.
Here is the solution we found:
Let’s examine the given sequence:
For 3 → 6 → 12
For 4 → 8 → 16
For 5 → 10 → ?
Let’s analyze what happens:
– From 3 to 6, we multiply by 2 (3 × 2 = 6).
– From 6 to 12, we multiply again by 2 (6 × 2 = 12).
For the second line:
– From 4 to 8, we multiply by 2 (4 × 2 = 8).
– From 8 to 16, we again multiply by 2 (8 × 2 = 16).
So the rule seems to be: at each step, we multiply by 2.
Let’s apply that to the third line:
– From 5 to 10, we multiply by 2 (5 × 2 = 10).
– Then, from 10 to ?, we again multiply by 2 (10 × 2 = 20).
Answer: 20
So, were you on the right track? Did you find it? Whether you reached the answer or not, the important thing is that you tried.
If you enjoyed this game, be sure to take on more challenges from our recommended reading section by clicking here.
