Question

qual o quociente entre o MMC (10,8) e o MDC (12,20)?

Answer 1

MMC de 8 e 10 = 40 
MDC  = 4

Answer 2

MMC 

10 , 8 | 2
  5 , 4 | 2
  5 , 2 | 2
  5 , 1 | 5 
  1 , 1 |____
            2 . 2 . 2 . 5 = 40

MDC 

D(12) = {1,2,3,4,5,6,12}
D(20) = {1,2,4,5,10,20}

MDC (12,20) = 5