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and positive integer d is a divisor of n Is d>√n ?
(1)d is divisible by 10
(2)d is divisible by 36
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
题干:n=2^4*3^2*5^2=2^2*(3*5*2)^2=,那么根号下的n就等于2*3*5*2=60,也就是问d是否大于60呢?
条件一:d可以被10整除,那么d可以是10,也可以是60,也可以120,那么的话d可以小于60,也可以等于60,也可以大于60,not sure,不充分。
条件二:d可以被36整除,那么d可以是36,也可以是72,那么的话d可以小于60,也可以大于60,所以not sur,不充分。
结合条件一和条件二,d既可以被10整除,也可以被36整除,那么d最小是180, 180肯定大于60,充分。
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数据充分DS
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