Question

Find the LCM of 16 12 18 by prime factorization method

Answer 1

LCM is 2×2×2×2×3×3=144

Answer 2

Prime factorization of 
16=2x2x2x2
12=2x2x3
18=2x3x3

So, the LCM of 16,12 and 18 will be
=2x2x2x2x3x3
=16x9
=144