Виталий

в каждой из которых присутствует хотя бы одно из чисел с five_group.

five_group = set([3, 5, 13, 18, 20])
COMBINATIONS = [list(i) for i in itertools.combinations(
    range(1, 26), 5) if five_group.intersection(i)]

from itertools import combinations
import operator

operators = [
    (operator.add, "+"),
    (operator.mul, "*"),
    (operator.sub, "-"),
    (operator.truediv, "/")
]

numbers = [24, 22, 81, 4, 72, 2355, 2, 3, 2358]

for n1, n2 in combinations(numbers, 2):
    for oper in operators:
        result = oper[0](n1, n2)
        if result in numbers:
            print("{}{}{}={}".format(n1, oper[1], n2, result))