S is the son of F. F is the sister of G. G is the daughter of B. E is the wife of B. How is E related to S?

💡 Solution & Explanation

F is the sister of G, so F is also a child of B. E is B's wife, so B and E are both parents of F. S is F's son, so B and E are S's grandparents. Therefore E is S's grandmother.