GRE数学which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?A.6B.8C.27D.42E.54为什么是C,j是3的时候,27不就是一

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GRE数学which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?A.6B.8C.27D.42E.54为什么是C,j是3的时候,27不就是一
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GRE数学which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?A.6B.8C.27D.42E.54为什么是C,j是3的时候,27不就是一
GRE数学which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?
which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?
A.6
B.8
C.27
D.42
E.54
为什么是C,j是3的时候,27不就是一个因子么?

GRE数学which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?which of the following cannot be a factor of 2^i*3^j where i and j are positive intergers?A.6B.8C.27D.42E.54为什么是C,j是3的时候,27不就是一
A 6= 2*3
B 8=2^3
C 27=3^3
D 42=2*3*7 有质因子7 ,答案是d
E 54=2*3^3

这题目感觉有问题,8=2^3*3^0,27=3^3*2^0,都不行啊。

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