1, 2, 2, 5, 3, 10, 4, 17, 5, ?
23
25
26
27
24
1, 2, 2, 5, 3, 10, 4, 17, 5,?
The series is combination of two series at the alternate position. In first series, the pattern followed is +1.
In the second series, the pattern followed is +3, +5, +7, +9.
In the fist series, 1+1=2, 2+1= 3, 3+1= 4, 4+1= 5
In the second series, 2+3= 5, 5+5= 10, 10+7= 17, 17+9= 26