a, Ta có: 24 =  2 3 . 3 ; 10 = 2.5

=> ƯCLN(24;10) = 2

BCNN(24;10) =  2 3 . 3 .5 = 120

b, Ta có: 150 =  2 . 3 . 5 2 ; 84 =  2 2 . 3 . 7

=> ƯCLN(150;84) = 2.3 = 6

BCNN(150;84) =  2 2 . 3 . 5 2 . 7

c, Ta có: 140 =  2 2 . 5 . 7 ; 210 = 2.3.5.7; 56 =  2 3 . 7

=> ƯCLN(140;210;56) = 2.7 = 14

BCNN(140;210;56) =  2 3 . 3 . 5 . 7 = 840

d, Ta có: 105 = 3.5.7; 84 =  2 2 . 3 . 7 ; 30 = 2.3.5

=> ƯCLN(105;84;30) = 3

BCNN(105;84;30) =  2 2 . 3 . 5 . 7 = 420

1: UCLN(12;18)=6

BCNN(12;18)=36

2: UCLN(24;48)=24

BCNN(24;48)=48

dài rứ ai làm nổi

ai làm hộ mk tích cho... mk đag cần gấp

a,

56=2³.7

140=2².5.7

=>ƯCLN(56,140)=2².7=28

60=2².3.5

180=2².3².5

=>ƯCLN(60,180)=2².3.5=60

b,

84=2².3.7

108=2².3³

=>BCNN(84,108)=2².3³.7=756

24=2³.3

40=2³.5

168=2³.3.7

=>BCNN(24,40,168)=2³.3.5.7=840

Tick giúp mình với nhá!

 đúng thì k mình nh

UC(24,10)=2

UC(30,28)=2

UC(150,84)=28

UC(11,15)=1

UC(30,90)=30

UC(105,84,30)=3

UC(14,82,124)=14

UC(24,36,160)=12

UC(200,125,75)=25

Mk nhanh nhất nha!

5: \(16=2^4;32=2^5;112=2^4\cdot7\)

=>ƯCLN(16;32;112)=\(2^4=16\) ; BCNN(16;32;112)=\(2^5\cdot7=32\cdot7=224\)

6: \(25=5^2;55=5\cdot11;75=5^2\cdot3\)

=>ƯCLN(25;55;75)=5; BCNN(25;55;75)=\(5^2\cdot3\cdot11=33\cdot25=825\)

7: \(150=2\cdot3\cdot5^2;84=2^2\cdot3\cdot7;30=2\cdot3\cdot5\)

=>ƯCLN(150;84;30)=\(2\cdot3=6\) ; BCNN(150;84;30)=\(2^2\cdot3\cdot5^2\cdot7=10^2\cdot3\cdot7=2100\)

8: \(12=2^2\cdot3;15=3\cdot5;10=2\cdot5\)

=>ƯCLN(12;15;10)=1; BCNN(12;15;10)=\(2^2\cdot3\cdot5=4\cdot3\cdot5=60\)