Introduction
Hidden or tricky relationship problems mask the required link using indirect clues, implied generations, negations, or uncommon phrasing. They test your ability to read between the lines - spotting implied parents, in-law links, or deliberately omitted genders - and then convert those hints into the precise relationship.
This pattern is important because many high-quality reasoning questions use small linguistic twists to trap careless solvers. Learning this pattern reduces silly mistakes and improves speed.
Pattern: Hidden/Tricky Relationship
Pattern
The key idea: Convert implied or indirect statements into explicit family links (draw a micro-tree) and avoid assuming gender unless explicitly stated.
- Statements that imply a relation via marriage (e.g., “wife’s brother” → in-law).
- Negations or exclusives (“only son”, “only daughter”) that force identity.
- Shortcuts like “X is the mother of Y’s sister” which hides generation steps.
- Missing gender where a gender-neutral answer or DNT is required.
Step-by-Step Example
Question
D is the sister of B. B is the mother of A. C is the husband of D. How is C related to A?
(A) Uncle (B) Father-in-law (C) Brother (D) Cannot be determined
Solution
-
Step 1: Decode each statement.
B is the mother of A → B is one generation above A. D is the sister of B → D is also one generation above A (B and D are siblings). C is the husband of D → C is married into B’s generation. -
Step 2: Draw the micro-family.
Parents/generation: (B - sister D). Children: A is child of B. D’s husband = C → C is spouse of A’s maternal aunt. -
Step 3: Translate to standard relation.
Spouse of one’s aunt = uncle (by marriage). So C is A’s uncle (specifically maternal uncle by marriage). -
Final Answer:
Uncle → Option A. -
Quick Check:
Aunt’s husband = uncle (by marriage) ✅
Quick Variations
1. “X is the mother of Y’s brother” → X is the mother of Y’s sibling → X is parent of Y (if same parent), often implies parent.
2. “A is the only son of B” → if B’s only son is A, phrases like “my father’s only son” may refer to the speaker themselves.
3. “Wife’s brother” vs “brother’s wife” - check order: one is in-law in speaker’s generation, the other is spouse of sibling.
4. If an option list contains gender-neutral term (Child, Parent, Sibling) prefer it unless gender is explicitly given.
Trick to Always Use
- Step 1 → Reword each sentence into “X is Y of Z” plain English before drawing anything.
- Step 2 → Draw a tiny family tree with generations on separate rows - even 3 boxes are enough.
- Step 3 → Mark marital links with a dashed line and blood links with a solid line (helps avoid confusing aunt vs aunt-by-marriage).
- Step 4 → If gender is not given but options are gendered, choose “Cannot be determined” or the neutral option if available.
Summary
Summary
- Convert implied or indirect clues into explicit family links before solving.
- Never assume gender unless explicitly stated.
- Use small diagrams to visualize generation gaps and marital links.
- Prefer neutral or DNT answers when gender ambiguity exists.
Example to remember:
“A is the sister of B. B is the mother of C. A’s husband is D. How is D related to C?” → Uncle (by marriage)
Hint: Daughter’s husband = son-in-law.
Common Mistakes: Choosing 'son' due to generational confusion.