Complete the following number series
- Complete the following number series 81 27 9
- Complete the following series 6 and 13 and 25 and 51 and 101
- Complete the following series correctly 5 9 17 33
- Complete the following series correctly 2 8 26 80
- Complete the following series 6 13 25
- Complete the following series 5.5 7 8.5
- Complete the following series correctly 2 5 11 23
- Complete the following series correctly 1 4 9 16
- Complete the following series 16 24 48