1.3的n次方.2.n的平方加1.
观察下面两列数;1.3,9,27,81,243,729…… 2.2,5,10,17,26,37……
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相关问题
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观察下面的数(1)3,9,27,81,243,729,...(2)1,7,25,79,241,727,...(3)1,3
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观察下面各行数①-3,9,-27,81,-243,729……②0,12,-24,84,-240,732……
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1+3+9+27+81+243+729
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1-[2/3]-[2/9]-[2/27]-[2/81]-[2/243]-[2/729]=______.
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观察下面一列数:2,5,10,17,26,37,50,65.
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下列数中有一个与众不同 1 3 6 27 81 243() 1 2 5 10 16 26 37()
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观察下面三行数:-3,9,-27,81,-243,…-5,7,-29,79,-245,…-1,3,-9,27,-81…(
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一、观察下面的三列数:①3,-9,27,-81,243…②1,-11,25,-83,241… ③-1,3,-9,27,-
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观察下列算式:31=3,32=9,33=27,34=81,35=243,36=729,37=2187,38=6561,…
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观察下面三行数,-3,9,-27,81,-243…… 1,13,-23,85,-239…… 1,-3,9,-27,81