A math problem for high school students that many adults cannot solve.

A math problem for high school students that many adults cannot solve.

Remember… The ringing bell, the multiplication table recited at a rapid pace, the big, squared notebooks and the grades on Monday morning. Just thinking about it brings a gentle wave of nostalgia. But let’s be honest: how long has it been since you last solved a simple math problem? Be careful, it’s not as obvious as it might seem…

A childish calculation… that traps even adults

Here’s an example taken straight from a CE2 textbook (primary school in France). At first glance, everyone thinks they’ll solve this problem easily. But once you start, you’ll quickly realize that the answer isn’t that simple. And here’s where it gets interesting. Ready? Here’s the statement:

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