1/12,1/6,1/3,2/3,....., maka 6u13

jawab

a = 1/12
r = 2

6 . u13 =  6. a . r^12
= 6.  1/12. (2)^12
= 1/2. (2)^12
= (2)^-1 . (2)^12
= 2^11
= 2.048