If so, congratulations! Your mathematical logic is well-honed and your memory of the fundamentals is top-notch. If not, don't panic—you're in very good company. This kind of challenge exists precisely to remind us that our brains love shortcuts… not always the right ones.
What's great about these little exercises is that they do much more than just boost our ego. They stimulate concentration, awaken memory, and keep the mind alert. A bit like a mini workout for the brain, without having to put on sneakers.
So, the next time you come across this type of puzzle on social media, don't scroll too fast — it might be your chance to shine in front of your whole family at Sunday dinner!
Maths is not a matter of talent, just of a good method well kept in memory.
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