220=22.5.11
220=24.3.5
300=22.3.52
BCNN(220,220,300)=2.2.2.2.3.5.5.11=13200
Vậy BCNN(220,220,300)= 13200
Ta có:
220 = 22 . 5 . 11
240 = 24 . 3 . 5
300 = 22 . 3 . 52
=> BCNN (220, 240, 300) = 24 . 3 . 52 . 11 = 13 200
Vậy BCNN (220, 240, 300) = 13 200
Chúc bạn học tốt!