问题
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:1,3,3,5,7,9,13,15,(),()。A.19,21 B.19,23 C.21,23 D.27,30
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:1, 3, 3, 5, 7, 9, 13, 15, (), ()。A.19,21B.19,23C.2l,23D.27,30
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1, 9, 7, 27, 13, (), 19, 63 A.25 B.33 C.45 D.54
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1, 3, 3, 5, 7, 9, 13, 15, (), ()。A.19,21B.19,23C.2l,23D.27,30
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0.1+0.3+0.5+0.7+0.9+0.1 1+0.13+0.15+0.17+0.19+0.21+?+0.99一().A.13.25 B.22.55 C.27.25
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1,3,3,5,7,9,13,15,(),()。 A.19,21 B.19,23 C.2l,23 D.27,30