the next number in the series 2,5,11,20,32,47 is

Question

the next number in the series 2,5,11,20,32,47 is

Answer 1

The series are increasing by the multiple of 3

 

 

2, _3 --> 5

5 _6 --> 11

11 _9 --> 20

20 _12 --> 32

32 _15 --> 47

47 _18 --> 65 (your unknown)