问题
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3,17,21,25,(),33。 A. 27 B. 29 C. 31 D.
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:1/3, 1, 1, 13/17, 17/33, () A.21/34 B.21/65 C.17/53 D.1
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1/3, 1, 1, 13/17, 17/33,() A.21/34 B.21/65 C.17/53 D.1
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3,5,9,13,21,25,()A.27B.29C.31 D.33
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13,17,21, 25,(),33。A.27 B.29 C.31 D.32
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列竖式计算下面各题。(1)295×14=(2)932×21=(3)206×13=(4)602×33=(5)560×40=(6)908×17=