What should come in place of the question mark '?' in the following number series?
(?), 91, 364, 1456, 5824, 23296
1
22.75
2
22
3
28
4
32.75
5
31
What should come in place of the question mark '?' in the following number series?
(?), 91, 364, 1456, 5824, 23296