题库搜索>数据充分DS-17922
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What is the value of x?
(1)4x+1 +4x =320
(2)x2 =9
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
条件一 4*4^x+4^x=320 可得x
条件二 两个值不充分
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数据充分DS
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数据充分DS -17947
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数据充分DS -17922
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数据充分DS -17905
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数据充分DS -17949
What is the value of xyz ?(1)x=y2 and z=2x5 (2)xz =52 and 1y =110
数据充分DS -17947
If S is the sum of the first n positive integers, what is the value of n?(1)S<20(2)>220
数据充分DS -17922
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数据充分DS -17912
If x≠1,is y equal to x+1?(1)y-2x-1 =1(2)y2 =(X+1)2
数据充分DS -17905
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