6,15的第5個公倍數
回答 (6)
2013-11-08 2:44 am
✔ 最佳答案
6,15的第5個公倍數是 1506倍數(150以內) 6 12 18 24 30 36 42 48 54 60 66 72 78 94 100 .......150
15倍數(150以內) 15 30 45 60 75 .....105 120 135 150.......
so 16,15的第5個公倍數是 150!!!
2013-11-08 2:46 am
[6,15]=[2×3,3×5]=2×3×5=30
30×5=150...Ans
30×5=150...Ans
2013-11-08 2:36 am
我用英文回答吧!
you can try to think what they common
6 can be divied by:1,2,3,6
15 can be divied by:1,3,5,15
look! they are 3's factors so 6*15/3=90/3=30,so 150 is wrong.
you can try to think what they common
6 can be divied by:1,2,3,6
15 can be divied by:1,3,5,15
look! they are 3's factors so 6*15/3=90/3=30,so 150 is wrong.
參考: myself
2013-11-08 2:07 am
6,15的第5個公倍數:150
hope that I am right la~
hope that I am right la~
收錄日期: 2021-04-13 19:47:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20131107000051KK00129