Question

Use theprimefactor methodto find the least commonmultiple of 14,21,40

Answer 1

the given numbers are,

14 = 2 x 7

21 = 3 x 7

40 = 2 x 2 x 2 x 5

so, the least common multiple (LCM ) is,

= 2 x 2 x 2 x 3 x 5 x 7

= 840

thus, the LCM is 840