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TIL that 0.9 repeating equals 1. Proof: 1/3 = 0.3 repeating, when multiplied by 3, it is 0.9 repeating. However, 1/3 times 3 is equal to 3/3, which is equal to 1. Therefore, because 0.3 repeating = 1/3, 0.9 repeating = 3/3, which means 0.9 repeating = 1.

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