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Link to prepare packs from zero to one hundred https://riaziateshirin.com/product-ca... Contrary to what many students think, one of the most powerful problem-solving strategies is guessing and experimenting, and if guessing is systematic, it can sometimes solve very difficult questions that perhaps there is no analytical method to solve them! In this video, we see one of the applications of this powerful strategy???????? If you think of another method, please comment so that I and the rest of my friends can learn from you???? If you like this model of challenging math questions, I suggest that you definitely subscribe to the channel and activate the bell next to it so that you don't miss the next videos Link to the Instagram page with more than 600 challenging problems⬇️ https://www.instagram.com/riaziateshi... Link to the Telegram channel⬇️ https://t.me/riaziateshirin_rahimi