2, 3/2, 10/9, 7/8, 18/25, ? A: 5/14 B: 11/18 C: 13/27 D:26/49

作者: rantiku 人气: - 评论: 0

问题 2, 3/2, 10/9, 7/8, 18/25, ? A: 5/14 B: 11/18 C: 13/27 D:26/49

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答案 B

解析把3/2看成6/4，7/8看成14/16 可以看出规律是分子依次加4,分母分别是1,2,3,4,5的平方所以下一个数的分子是18+4＝22,分母是6的平方36 答案是22/36＝11/18

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