试题与答案

6/28,21/98,18/84,9/42,( ) A.25/60 B.12/44

题型:单项选择题

题目:

6/28,21/98,18/84,9/42,( )

A.25/60

B.12/44

C.12/56

D.25/78

答案:

参考答案:C

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