from random import randint n , s , c = 0 , 0 , 0 for i in range(1,1001): while s == 0 and n < 10: e = randint(1,6) if e == 6: s = 1 n += 1 if n == 10: c += 1 n , s = 0 , 0 print(c / 1000)