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11, 13, 16, 21, 28, ()A.37 B.39 C.41 D.47
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11, 13, 16, 21, 28, () A.37 B.39 C.41 D.47
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51,49,87,13,45,55,63,()A.67B.37C.47D.57
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51,49,87,13,45,55,63,()A.67 B.37 C.47 D.57
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7,13,23,38,61,97,() A.112 B.138 C.153 D.182
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12 23 35 47 ()。A.74 B.61C.56D.82
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最小方差资产组合的期望收益率和标准差分别为( )。A.18.61%;23.48%B.15.61%;16.54%C.13.39%;13.9