№8 — #8179

from itertools import *
k = 0
for w in product('0123456789', repeat=7):
    s = ''.join(w)
    if s[0] != '0' and s.count('9') == 1 and sum(int(c) % 2 == 1 for c in s) == 4 and '90' not in s and '09' not in s:
        k += 1
print(k)