Bài 1:
a) \(BC\left(6;10\right)\in\left\{30;60;90;...\right\}\)
b) \(BC\left(9;12\right)\in\left\{36;72;108;...\right\}\)
Bài 2:
a) \(\text{BCNN}\left(1;8\right)=8\)
b) \(\text{BCNN}\left(8;1;121;1\right)=24\)
c) \(\text{BCNN}\left(36;72\right)=72\)
d) \(\text{BCNN}\left(5;24\right)=120\)
Bài 3:
a) \(\text{BCNN}\left(17;27\right)=459\)
b) \(\text{BCNN}\left(45;48\right)=720\)
c) \(\text{BCNN}\left(60;150\right)=300\)
d) \(\text{BCNN}\left(10;12;15\right)=60\)
1)
a) BC (6,10) là 60
b) BC (9.12) là 36
2)
a) BCNN (1,8) là 8
b) BCNN ( 1,8,12) là 24