If K is common multiple of75, 98 ,140, which of the following must be true?
Ⅰ. K is a multiple of 9
Ⅱ. K is a multiple of 49
Ⅲ. K is greater than 14000
确认：Ⅲ对
这是12月的JJ总结，我觉得有问题：答案应为Ⅱ. Ⅲ. 应为K最小应为这三个数的最小公倍数：2*2*5*7*7*15
大家认为呢？
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[此贴子已经被作者于2003-1-21 16:07:35编辑过] | 
