Đúng, 8 + 6 = 14, 0 + 1 = 1, 10 + 10 = 20, 14 + 2 = 16, 16 + 4 = 20, 5 + 7= 12, 6+4 =10, Sai, 19 + 4 = 11, 3 + 8 = 12, 18 + 7 = 7, 18 + 9 = 14, 9 + 1 = 8.

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