標題:

幫下我計H.C.F&L.C.M(20.30.40)(30.54.72)急急急AR!

發問:

幫下我計兩條數 (1.) 20,30,40 L.C.M= ? H.C.F=? (2.) 30,54,72 L.C.M= ? H.C.F=? 更新: &要條直式

最佳解答:

1) 20,30,40 L.C.M = 120 H.C.F. = 10 2.) 30,54,72 L.C.M = 1080 H.C.F. = 6

其他解答:

20的倍數:20-40-60-80-100-120... 30的倍數:30-60-90-120... 40的倍數:40-80-120... 20,30,40LCM=120 20的因數:1,2,4,5,10,20 30的因數:1,2,3,5,6,10,15,30 40的因數:1,2,4,5,8,10,20,40 20,30,40HCF=10 2007-10-09 19:16:33 補充: ----版權所有 複製必究---- 2007-10-10 18:08:09 補充: 30的倍數:20,40,60.............108054的倍數:54,108,162..........108072的倍數:72,144.................1080 2007-10-10 18:10:00 補充: 30的因數:1,2,3,5,6...54的因數:1,2,3,6...72的因數:1,2,3,4,6... 2007-10-10 18:10:45 補充: 30,54,72LCM=1080HCF=6 2007-10-10 18:11:06 補充: ----版權所有 複製必究----|||||(1) 20,30,40 20=10x2 30=10x3 40=10x4 L.C.M=10x2x3x4 L.C.M = 120 H.C.F. = 10 (2.) 30,54,72 30=2x3x5 54=2x3x3x3 72=2x2x2x3x3 L.C.M.=2x2x2x3x3x3x5 =1080 H.C.F. = 6

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