數學H.C.F. 和 L.C.M. 問題

1.
56 =2x2x2x7

64 =2x2x2x2x2x2

H.C.F. =2x2x2=8

L.C.M. =2x2x2x2x2x7=224



2.
48 =2x2x2x2x3

72 =2x2x2x3x3

120=2x2x2x3x5

H.C.F. =2x2x2x3=24

L.C.M. =2x2x2x2x3x3x5=720

希望可以幫到你!*v*

1. 56 =1x56
2x28
4x14
7x8

64 =1x64
2x32
4x16
8x8

H.C.F. = 8

L.C.M. = 448


2. 48 = 1x48
2x24
3x16
4x12
6x8

72 = 1x72
2x36
3x24
4x18
6x12
8x9

120=1x120
2x60
3x40
4x30
5x24
6x20
10x12

H.C.F. = 24

L.C.M. = 720

2007-07-20 14:34:01 補充：
or1.56 =2x2x2x764 =2x2x2x2x2x2H.C.F. =2x2x2= 8L.C.M. =2x2x2x2x2x7= 2242. 48 =2x2x2x2x372 =2x2x2x3x3120=2x2x2x3x5H.C.F. =2x2x2x3= 24L.C.M. =2x2x2x2x3x3x5= 720

1.

56 = 2 x 2 x 2 x 7

64 = 2 x 2 x 2 x 2 x 2 x 2

H.C.F. = 2 x 2 x 2 = 8

L.C.M. = 2 x 2 x 2 x 2 x 2 x 2 x 7

2.

48 = 2 x 2 x 2 x 2 x 3

72 = 2 x 2 x 2 x 3 x 3

120 = 2 x 2 x 2 x 3 x 5

H.C.F. = 2 x 2 x 2 x 3 = 24

L.C.M. = 2 x 2 x 2 x 2 x 3 x 3 x 5 = 720

2007-07-20 14:27:30 補充：
1.L.C.M. = 2 x 2 x 2 x 2 x 2 x 2 x 7 = 448

1. 56, 64 HCF:8, LCM:448
2. 48,72 HCF:24, LCM:144

2007-07-28 11:32:18 補充：
2. 48,72 120, LCM =720