What is the LCM of 16 18 and 21?

Answer 1

1008

To solve, break into prime numbers:

16 (2 x 2 x 2 x 2)

18 (2 x 3 x 3)

21 (3 x 7)

Then take minimum to make each number:

2 x 2 x 2 x 2 x 3 x 3 x 7 = 1008