Choose the place of the question mark in the series from number in the list 2, 4, 8, 5 : 3, 6, 9, 5 then 8, 11, 14, 12 : ?

Question

Choose the place of the question mark in the series from  number in the list 2, 4, 8, 5 : 3, 6, 9, 5 then 8, 11, 14, 12 : ?

Accepted Answer

9, 13, 15, 12. First number +1Second number +2Third number +1Fourth number is kept the same.