Question

If HCF(a,b)=18so LCM(a,b)is not ?option are a 36 b 48 c 72 d 108​

Answer 1

HCF IS ALWAYS A FACTOR OF LCM

IN THIS CASE HCF IS 18

IT IS A FACTOR OF 36(18*2)

72(18*4) AND 108(18*6)

BUT NOT THE A FACTOR OF 72

so lcm can't be 72