问题
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1,1/2 , 6/11 ,17/29 , 23/38 ,()A.28/45 B.117/191 C.31/47 D.122/199
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35 . 1 3 5 9 17 31 57 ()A . 105 B . 89 C . 95 D . 135
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1 3 5 9 17 31 57 () A . 105 B . 89 C . 95 D . 135
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1,5,6,31,191,()A.5927B.1052 C.4769D.3256
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1 1/2 6/11 17/29 23/38 ()A. 117/191 B. 122/199 C. 28/45 D. 31/47
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1,5,6,31,191,()A.5927B.1052C.4769 D.3256