What should come in place of the question mark '?' in the following number series?
0.75, 2.5, ?, 35, 176, 1057
1
7.5
2
8.25
3
7.25
4
8.5
5
6.75
What should come in place of the question mark '?' in the following number series?
0.75, 2.5, ?, 35, 176, 1057