问题
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3, 9, 27, 81,()A.243 B.342 C.433 D.135
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:1,4/3,13/9,40/27,()。A.121/81 B.67/81 C.121/51 D.67/51
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1,4/3,13/9,40/27,()。A.121/81 B.67/81 C.121/51 D.67/51
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一27, 一l4, 3, 27, 40, 57, ()。A.81 B.24 C.33 D.87
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3,-3,9,-3,27,-3,(),-3 A.81 B.243 C.729 D.54
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1 3 6 12 27 () A.54 B.69 C.75 D.81
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