Question

Tìm BC thông qua BCNN

a) 10 và 24              b) 48,120

c) 20,35,60              d) 18,24,32

Answer 1

a 10=2.5

24=2³.3

BCNN(10,24)=2³.5.3=120

→BC(10,24)=B(120)={0;120;240;360;480;....}

b 20=2².5

35=7.5

60=2².3.5

BCNN(20,35,60)=2².3.5.7=420

→BC(20,35,60)=B(420)={0;420;840;1260;...}

c 48=2⁴.3

120=2³.3.5

BCNN(48,120)=2⁴.3.5=240

→BC(48,120)=B(240)={0;240;480;720;...}

d

18=2.3²

24=2³.3

32=2⁵

BCNN(18,24,32)=2⁵.3²=288

→BC(18,24,32)=B(288)={0;288;576;864;...}