Correto, 2x1=2, 2x2=4, 2x3=6, 2x4=8, 2x5=10, 2x6=12, 2x7=14, 2x8=16, 2x9=18, 2x10=20, Incorreto, 2x1=3, 2x2=5, 2x3=8, 2x5=20, 2x6=14.

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