18的因数有:1,2,3,6,9,18;
1:2=3:6;或3:9=6:18等;(答案不唯一).
故答案为:1,2,3,6,9,18;1:2=3:6.
18的因数有_,从中选出4个数组成一个比例是_.
18的因数有______,从中选出4个数组成一个比例是______.
数学人气:739 ℃时间:2019-10-19 17:59:47
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