Correcto: 15/4, 20/6, 7/2, 8/5, 10/5, 18/7, 6/2, 18/9, 9/2, 16/8, 19/3, Incorrecto: 3/8, 10/15, 4/9, 6/10, 9/13, 1/8, 7/15, 5/8,

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