2,5/2,11/4,35/12,73/24

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2,5/2,11/4,35/12,73/24,( )
a.365/120

b.377/120

c.383/120

d.395/120

参考答案:

b

两两作差,1/2,1/4,1/6,1/8所以后一项为1/10,最后答案73/24+1/10=377/120