La parola è PALLONE
1) Casella 20
(2/7)*70 = 20
2) Casella 35
(3/10)*(70-20) + 20 = 35
3) Casella 42
(1/10)*70 + 35 = 42
4) Casella 49
(1/4)*(70-42) + 42 = 49
5) Casella 52
(1/7)*(70-49) + 49 = 52
6) Casella 58
(1/3)*(70-52) + 52 = 58
7) Casella 70
(4/4)*(70-58) + 58 = 70