问题
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11,17,(),31,41,47 A. 19;B. 23;C. 27;D. 29;
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:1/2,3/2,5/6,11/30,()。A.29/64 B.40/57 C.41/330 D.108/119
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4,6,5,7,7,9,11,13,19,21,() A. 27,29 B. 32,33 C. 35,37 D.41,43
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1/2,3/2,5/6,11/30,()。A.29/64 B.40/57 C.41/330 D.108/119
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-1,1,5,11,19,29,() A.30 B.31 C.32 D.41
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-1,1,4,8,14,20,29,37,()A. 40B. 49C. 51D. 57
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