Question

find the LCM of 16,30 and 42

Answer 1

1680 is the right answer

Answer 2

16=2 x 2 x 2 x 2
30=2 x 3 x 5
42=2 x 3 x 7

LCM=2 x 3 x 2 x 2 x 2 x 5 x 7
= 6×4×10×7
= 24× 70
= 1680