BC(30,225,54)
BC(5,15)
BC(9,12,18)
ƯC(9,25)
ƯC(6,9,15)
BC(6,10,15)
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\(a,ƯC\left(16,24\right)=Ư\left(8\right)=\left\{\pm1;\pm2;\pm4;\pm8\right\}\\ b,BC\left(84,108\right)=B\left(756\right)=\left\{0;756;1512;2268;...\right\}\\ c,ƯC\left(36,48,120\right)=Ư\left(12\right)=\left\{\pm1;\pm2;\pm3;\pm4;\pm6;\pm12\right\}\\ d,BC\left(42,64,70\right)=B\left(6720\right)=\left\{0;6720;13440;20160;...\right\}\)
a) ƯC (24; 12) = {1; 2; 3; 4; 6; 12}
b) ƯC ( 24;16) = {1;2;4;8}
c) ƯC (32;20) = {1;2;4}
d) ƯC ( 24;12;16) = {1;2;4}
a) Vì Ư (24) = {1; 2; 3; 4; 6; 8; 12; 24};
Ư (40) = {1; 2; 4; 5; 8; 10; 20; 40};
=> ƯC (24;40) = {1;2;4;8}.
b) Vì B (2) = {0; 2; 4; 6; 8; 10; 12; 14; 16; 18; 20; 22; 24;... };
B(8) = {0,8; 16; 24; 32; 40;...}.
=> BC (2;8) = (0;8; 16;24;32;...}.
a) Vì Ư (24) = {1; 2; 3; 4; 6; 8; 12; 24};
Ư (40) = {1; 2; 4; 5; 8; 10; 20; 40};
=> ƯC (24;40) = {1;2;4;8}.
b) Vì B (2) = {0; 2; 4; 6; 8; 10; 12; 14; 16; 18; 20; 22; 24;... };
B(8) = {0,8; 16; 24; 32; 40;...}.
=> BC (2;8) = {0;8; 16;24;32;...}
c, Ư(20) = {1;2;4;5;10;20}
Ư(30) = {1;2;3;5;6;10;15;30}
=> ƯC (20; 30) = {1;2;5;10}
d, B(10) = {0;10;20;30;40;...}
B(15) = {0;15;30;45;60;...}
=> BC = {0;30;60;90;...}
BCNN(30,225,54)=1350
BCNN(5,15)=15
BCNN(9,12,18)=36
UCLN(9,25)=1
UCLN(6,9,15)=3
BCNN(6,10,15)=30