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I am not a magician but my teacher is. He is very strict in study but his teaching methods, superb, he gives examples, tell us story and repeats a line a thousand times that fits in our minds and When we get bored, they stop teaching and discuss with us about what I understood you to mean. And you discuss it with your friends try it, you will also remember it in the exam.
Sometimes you can't remember when you lack information about the topic