Find the number that can replace question mark (?) in the series given below.
1.5, 5, 10.5, 18, 27.5, 39, ?, __
1
48.5
2
52.5
3
62.5
4
72.5
Find the number that can replace question mark (?) in the series given below.
1.5, 5, 10.5, 18, 27.5, 39, ?, __