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1.02,4.12,8.6,15.24,()。 A.22.72 B.27.96 C.23.9
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1,1,2,6,24,() A,25;B,27;C,120;D,125
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:1,1,2,6,24,()。A.64B.78C.120D.136
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1,1,2,6,24,()。 A.48B.96C.120D.144
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1,1,2,6,24,()A.48B.96 C.120D.122
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02,4.12,8.6,15.24,()。A.22.72 B.27.96 C.23.96 D.26.72
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1 1 2 6 24 ()。A.48 B.96 C.120 D.122