Question

LCM of40,20
40=40,80,120,160,200,240,280,
320,360,400
20=20,40, 60,80,100,120,140,
160,180,200
common factors=40,80,120,
200
LCM=40​

Answer 1

$lcm \: of \: 40 \: \: 20 \\ \\ 40 = 2 {}^{3} \times 5 \\ 20 = 2 {}^{2} \times 5 \\ \\ therefore \\ lcm(40 \: \: 20) = 2 {}^{3} \times 5 = 40$

THAT IS THE ANSWER