Respuesta :

Given the following question:

1, 5, 20, 28

1 = 1

5 = 5

20 = 2 × 2 × 5

28 = 2 × 2 × 7

2 × 2 × 5 × 7

2 × 2 = 4

4 × 5 = 20

20 × 7 = 140

LmM = 140