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![[QWERTY] Треугольные числа и при чем тут футбольная турнирная таблица. Математика на QWERTY](https://sun9-37.userapi.com/impg/PUuthPfbwBp51Va1rxSK8Ogu-M8ustnftijhRA/_BkBXcnHshs.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=9352d4e4b1dc9d1c6d7a5b8856b3ed44&c_uniq_tag=RQQgoKp0GydWu_HJ9I1tSYkz_LZQGdN85fF9-S2yHjc&type=video_thumb)
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