Correcto: 4 + 6, 7 + 3, 5 + 5, 1 + 9, 2 + 8, 9 + 1, 8 + 2, 3 + 7, 6 + 4, 10 + 0, Incorrecto: 4 + 2, 9 + 2, 3 + 5, 1 + 6, 8 + 6, 7 + 4, 5 + 6, 6 + 6, 0 + 0, 3 + 8,

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