Continue the following number series with two numbers that can best continue the series. 1 10 3 9 5 8 7 7 9 6 ? ?

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问题 Continue the following number series with two numbers that can best continue the series. 1 10 3 9 5 8 7 7 9 6 ? ?

选项

答案11，5

解析 Alternating numbers go up by 2，and down by 1.

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A类竞赛（研究生）

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