试题 试卷
题型:填空题 题类:常考题 难易度:普通
13+23=9= ×22×32
13+23+33=36= ×32×42
13+23+33+43=100= ×42×52
…
根据上述规律计算:13+23+33+…+193+203={#blank#}1{#/blank#}.
3,-9,27,-81,243,-729,…;①
6,-6,30,-78,246,-726,…;②
1,-3,9,-27,81,-243,…③
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