G is the son of N. U is the daughter of H. H is the sister of G. D is the husband of N. How is D related to U?

💡 Solution & Explanation

H is the sister of G, so H is also a child of N. D is N's husband, so N and D are both parents of H. U is H's daughter, so N and D are U's grandparents. Therefore D is U's grandfather.