62)if d is the positive integer and f is the product of the first 30 positive integers what is the value of d?
(1) 10d is a factor of f.
(2) d > 6
这个题目说d 是一个正整数,f 是30!阶乘,d的值多少,
这个题应该怎么推理?
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sysadmin
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@Tina老师,老师,这道题帮忙讲一下b和c选项呗。主要区别在谓语单复数和后面的to provide 还是providing。主语是两个不可数名词and并列,谓语要用复数么?