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Mathematics, 01.12.2021 17:00 Tbutler21
Ravi brushes his teeth 18 times a day. Each time, he uses exactly 83 strokes up and 83 strokes down. After he eats, he must brush twice with two different brands of toothpaste. Ravi suffers from
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Ravi brushes his teeth 18 times a day. Each time, he uses exactly 83 strokes up and 83 strokes down....
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