Answer: The required complement of set G is {5, 7 , 8, 9, 10, 11, 13, 14, 15, 16, 17}.
Step-by-step explanation: Given that U is the set of positive integers less than 18. G is the set of positive factors of 12.
We are to find the complement of set G is universal set U.
According to the given information, we have
U = {1, 2, 3, . . 17}
and
G = {1, 2, 3, 4, 6, 12}.
Therefore, the complement of set G in set U is given by

Thus, the required complement of set G is {5, 7 , 8, 9, 10, 11, 13, 14, 15, 16, 17}.