ответ дай

Ответ: 654.

from collections import Counter

count = 0

for number in range(10000, 100000):
    s = str(number)
    digits = Counter(s)

    if (len(digits) == 3
            and 3 in digits.values()
            and sum(map(int, s)) % 7 == 0
            and s[0] != s[-1]):
        count += 1

print(count)

Программа выведет:

654