What should come in place of the question mark '?' in the following number series?
1, 0.5, 0.33, 0.25, ?, 0.161
0.15
2
0.18
3
0.19
4
0.22
5
0.20
What should come in place of the question mark '?' in the following number series?
1, 0.5, 0.33, 0.25, ?, 0.16