Welcome to the arena of mathematics, where the mind is put to the test with stimulating challenges !
Today we present a puzzle that seems simple on the surface, but requires quick and precise thinking: the equation 10/5(10+5-15).
Your mission, should you accept it, is to solve this equation in less than 15 seconds. IQ tests and mathematical puzzles like this one have long been used to assess logic and intellectual agility. D

oday, these challenges are growing in popularity, often shared and discussed on social networks, where they captivate and engage minds from all over the world. Get ready, the clock is ticking!
Here’s a puzzle that will test your powers of observation and concentration. To overcome this challenge, it won’t be enough to follow ordinary logic; we’ll have to explore creative solutions and think outside the box.
This exercise requires a sharp mind and attention to detail that often elude us in the hustle and bustle of our daily lives. Prepare to plunge into a world where conventional answers have no place, and where ingenuity is the key to success.
The riddle challenge
To solve a puzzle, it’s crucial to mobilize our minds and our inventiveness. Each piece is a challenge that calls on our ability to envisage extraordinary solutions. We need to be patient, observing shapes and patterns closely, looking for the subtle connections between elements.
Concentration is the key; it allows us to immerse ourselves in the challenge, pushing aside distractions to focus on the painstaking assembly. By sharpening our perception and lateral thinking, we can unravel the most complex intricacies and savour the satisfaction of success.
Patience is a virtue, especially when it comes to solving challenges that fire the imagination of Internet users. We have observed a growing interest in a specific mathematical challenge that is actively circulating on platforms such as Twitter, Facebook and Instagram.
This exercise stimulates the mind, invites people to challenge themselves and sparks lively discussion. For those still searching, we’ve added an image to make it easier to understand the solution. Before we reveal the trick, take a moment to reconsider the equation; the answer may be simpler than you think.
The secret of calculation revealed
We’d like to offer our warmest congratulations to those who beat this challenge in less than fifteen seconds. The solution is
- (10 +5 – 15) = 0
- 10 / 5 = 2
- 2 x 0 = 0
Therefore 10/5(10+5-15) = 0.

If you’ve found this answer quickly, you’re showing remarkable mental agility. Your ability to decipher equations under pressure is impressive.
For those who are still on their way, don’t be discouraged – every challenge overcome is a step towards mastery.