Question

Difficulty: HardBlood Relations

Read the following family relationship details carefully:
In a family of eight members—H,I,J,K,L,M,N,H, I, J, K, L, M, N, and OO—spanning three generations:
KK is the husband of NN.
NN has only two children, both of whom are daughters.
LL is one of the daughters of NN, and LL is married to JJ, who has no siblings.
HH is the brother-in-law of JJ.
MM is the daughter of II and the sister of OO.
NN is the maternal grandmother of OO.

Based on the given information, how is II related to OO?

Answer: Mother / mother

Answer

Mother
From the clues, NN has only two children and both are female (LL and II). LL is married to JJ. HH is the brother-in-law of JJ, meaning HH is married to LL's sister, II. Since MM is the daughter of II and sister to OO, II is the female parent (mother) of OO. This is further verified by NN being the maternal grandmother of OO.

Step-by-Step Solution

1
Determine the first generation and children of NN.
KK (male) and NN (female) form the top generation. NN has exactly two children, both daughters.
KK is the husband of NN, and NN has only two daughters.
2
Identify the two daughters and their spouses in the second generation.
LL is one daughter married to JJ. Since JJ has no siblings, JJ's brother-in-law HH must be married to LL's sister. Therefore, the second daughter of NN is II, and II is married to HH.
NN has only two daughters (LL and II). HH is married to II, making HH the co-brother-in-law of JJ.
3
Determine the relationship between II and OO.
MM and OO are siblings in the third generation. Since MM is the daughter of II, II is the female parent of both MM and OO.
II is a daughter of NN, making NN the maternal grandmother of OO, which confirms II is the mother of OO.

Key Concept

Deducing generational roles and familial positions in complex multi-generational family structures
Estimated Time:2m 0s
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