Which of the following numbers will replace the question mark (?) in the given series?
81, 243, 40.5, 121.5, 20.25, 60.75, ?
1
10.120
2
10.115
3
10.125
4
10.215
Which of the following numbers will replace the question mark (?) in the given series?
81, 243, 40.5, 121.5, 20.25, 60.75, ?