True, 10 + 10 = 20, 4 + 9 = 13, 3 + 9 = 12, 16 + 1 = 17, 1 + 1 = 2, False, 1 + 7 = 16, 9 + 4 = 18, 15 + 1 = 3, 8 + 11 = 14, 7 + 4 = 19.

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