1/3.1/24.1/36.1/49 ( ) a.1/62 b.1/63 c.1/64 d.1/65

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1/3.1/24.1/36.1/49 ( ) a.1/62 b.1/63 c.1/64 d.1/65

1/3.1/24.1/36.1/49 ( ) a.1/62 b.1/63 c.1/64 d.1/65
1/3.1/24.1/36.1/49 ( ) a.1/62 b.1/63 c.1/64 d.1/65

1/3.1/24.1/36.1/49 ( ) a.1/62 b.1/63 c.1/64 d.1/65
题目是不是写错了
应该是 1/13 1/24 1/36 1/49 (1/63)
规律:分母之差分别是11 12 13 14 ……

分母为3,24,36,49
逐个相差11,12,13,下一个就是49+14=63