问题
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:2,-3/4,10/9,-15/16,()。A.6/5 B.26/25 C. 2/3 D. 3/2
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-1 1 -4/3 2 () 16/3 A.13/4 B. –16/5 C-13/4 D.16/5
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2/3,3/5,5/8,9/13,() A.2/3 B.5/7 C.16/21 D.17/22
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-1 1 -4/3 2 () 16/3 A.13/4 B. –16/5 C-13/4 D.16/5
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2/3,3/5,5/8,9/13,()。 A.2/3B.5/7C.16/21D.17/22
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2,3,5,16,231,() A.53105B.60000C.16000D.72000