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Link to prepare packs from zero to one hundred https://riaziateshirin.com/product-ca... This unique problem ???? was selected from the second stage of the 5th Iranian Mathematical Olympiad ❤️, at first glance it seems impossible to solve, but in the process of its amazing solution, the stepwise reduction of the number of arcs from 89 to 2 arcs, will really delight every math enthusiast???????? If you think of another method, please comment so that I and the rest of my friends can learn it???? If you like this type of math challenge questions, I suggest you definitely subscribe to the channel and activate the bell next to it so you don't miss the next videos Link to the Instagram page with more than 600 challenge problems⬇️ https://www.instagram.com/riaziateshi... Link to the Telegram channel⬇️ https://t.me/riaziateshirin_rahimi