Can anyone solve this series:(i)5,2,17,4,?,6,47,8,65 .

Answer 1

5+12=17
than
17+14=?
than
?+16=47
than
47+18=65

so ?=31

Answer 2

Nice puzzle im in to it :)

Answer 3

31 is the right answer

Answer 4

5, 2, 17, 4, (31), 6, 47, 8, 65
Gape between 5 to 17 is 12 and 17 to 31 is 14 and 31 to 47 is 16 and 47 to 67 gape is 18... So 31 is the correct answer...

Answer 5

explanation
5+12 is 17
17+14 is 31
31+16 is 47 and so on
conclusion = just place 1 before next digit and add