What should come in place of the question mark '?' in the following number series?
12, 6, 18, 9, 26, 13, 36, 18, ?
1
46
2
48
3
50
4
52
5
None of these
What should come in place of the question mark '?' in the following number series?
12, 6, 18, 9, 26, 13, 36, 18, ?