1/2,3/5,7/10,13/17,21/26,( )
2023-06-10
A.31/47
B.5/7
C.65/97
D.31/37
参考答案:D
B.5/7
C.65/97
D.31/37
参考答案:D
分子作差2 4 6 8 10,21+10=31,分母作差3 5 7 9 11,11+26=37,答案31/37
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