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🎯 A challenge for your mind! Simple problems at first glance make even those who consider themselves experts in mathematics think. These questions often lead to mistakes, and every second person gets confused. What about you? 👉 Problem 1: The cost of a product increased by 10% in the first year, and fell by 10% in the second year. It seems that the final change is zero? But no! How did the cost of the product change over two years? 👉 Problem 2: The average speed of the bus increased by 25%. But this does not mean that the time will decrease by the same percentage! Can you correctly calculate by what percentage the travel time has decreased? 💭 These problems will test your attentiveness, logic, and knowledge of basic mathematical principles. Try to solve them yourself! 🔔 Why is it worth watching this video? You will learn how easy it is to fall into a mathematical trap. Get explanations with an analysis of errors so as not to get confused in the future. Check how attentive you are to details. 💬 Write your answers in the comments, and we will discuss them together! Who knows, maybe your answer will be the most accurate? 👍 Support the video with a like, subscribe to the channel and click the bell so as not to miss new puzzles and interesting analyses!