Blood Relation Puzzles Reasoning – Master Reasoning for Competitive Exams
Boost your understanding of blood relation puzzles reasoning with proven strategies designed for competitive exams like SSC, UPSC, and Banking.
Blood Relation Puzzles
Blood Relation Puzzles are a fundamental component of logical reasoning that tests your ability to decipher and establish familial relationships between individuals based on given information. These puzzles evaluate your analytical skills, pattern recognition, and ability to draw logical conclusions from complex relationship statements.
In competitive exams, Blood Relation questions assess your problem-solving approach under time constraints. Mastering this topic can significantly boost your reasoning scores as these questions frequently appear with moderate-to-high weightage across various government recruitment tests and entrance examinations.
Key Competitive Exams Featuring Blood Relation Puzzles:
- SSC CGL, CHSL, CPO, Steno, GD Constable
- UPSC CSAT (Civil Services Aptitude Test)
- IBPS PO, Clerk, SO (Banking Exams)
- SBI PO, Clerk, SO Exams
- RRB NTPC, Group D, ALP (Railway Exams)
- CAT, XAT, MAT (Management Entrance Tests)
- State PSCs (UPPSC, MPPSC, BPSC, etc.)
- Defense Exams (CDS, AFCAT, CAPF)
- Insurance Sector Exams (LIC AAO, NIACL AO)
Scoring Potential:
Blood Relation questions typically carry 2-5 marks in most exams. With proper preparation, you can solve these accurately within 30-45 seconds each, making them high-value targets for maximizing your reasoning score.
Types of Blood Relation Puzzles
These problems require constructing a simple family tree based on given relationships. They test your understanding of basic familial terms like father, mother, son, daughter, brother, sister, etc.
Solved Example 1:
Pointing to a woman in a photograph, Arun said, "She is the mother of my son's wife." How is the woman related to Arun?
Solution:
- 1. Arun's son's wife = Arun's daughter-in-law
- 2. Mother of Arun's daughter-in-law = Arun's daughter-in-law's mother
- 3. In Indian context, daughter-in-law's mother has no specific relation term
- 4. She would be the mother of Arun's son's spouse
- 5. Therefore, the woman is Arun's son's mother-in-law
Answer: The woman is Arun's son's mother-in-law.
Solved Example 2:
If Neha says, "Rohit's father is the only son of my grandfather," how is Neha related to Rohit?
Solution:
- 1. Neha's grandfather has only one son = Neha's father (since he's the only son)
- 2. Rohit's father is that only son = Neha's father
- 3. Therefore, Rohit's father is Neha's father
- 4. This makes Rohit and Neha siblings
Answer: Neha is Rohit's sister.
Q: Pointing to a man in a photo, Priya said, "He is the only son of the father of my sister's nephew." How is the man related to Priya?
Solution:
- Priya's sister's nephew = Could be Priya's son (if sister has no children) or sister's son
- Assuming it's Priya's son (most direct interpretation)
- Father of Priya's son = Priya's husband
- Only son of Priya's husband = Could be Priya's son or husband himself if he has no brothers
- Therefore, the man is either Priya's son or husband
- More likely interpretation: Priya's husband (as "only son" would typically refer to the father's only son)
Answer: The man is Priya's husband.
These problems use codes or symbols to represent relationships, requiring you to decode the symbols before determining the relationship.
Solved Example 1:
If A + B means A is the mother of B; A - B means A is the brother of B; A × B means A is the father of B; A ÷ B means A is the sister of B. Then, what does P × Q ÷ R mean?
Solution:
- 1. P × Q = P is father of Q
- 2. Q ÷ R = Q is sister of R
- 3. Therefore, P is father of Q, and Q is sister of R
- 4. This makes R the child of P (since Q is P's child and R is Q's sibling)
- 5. Gender of R isn't specified, but P is father to both Q and R
Answer: P is father of R (and Q is R's sister).
Q: Using the same codes as above, what does M ÷ N + O × P mean?
Solution:
- M ÷ N = M is sister of N
- N + O = N is mother of O
- O × P = O is father of P
- Therefore: M is sister of N, N is mother of O, O is father of P
- This makes M the maternal aunt (mausi) of O, and great-aunt of P
- Primary relationship asked is between M and P: M is great-aunt of P
Answer: M is the great-aunt of P.
These involve complex family structures spanning multiple generations, often requiring careful mapping of relationships across different levels.
Solved Example 1:
In a family, A is B's father. C is D's daughter. D is B's wife. E is A's father. F is E's wife. How is C related to F?
Solution:
- 1. A is B's father ⇒ A and B are father and son
- 2. D is B's wife ⇒ D is daughter-in-law of A
- 3. C is D's daughter ⇒ C is granddaughter of A
- 4. E is A's father ⇒ E is grandfather of B
- 5. F is E's wife ⇒ F is grandmother of B
- 6. Therefore, F is great-grandmother of C
Answer: F is C's great-grandmother.
Q: X is Y's mother. Z is X's father. P is Z's wife. Q is P's mother. Y is R's wife. How is Q related to R?
Solution:
- X is Y's mother ⇒ Y's mother is X
- Z is X's father ⇒ Z is Y's maternal grandfather
- P is Z's wife ⇒ P is Y's maternal grandmother
- Q is P's mother ⇒ Q is Y's maternal great-grandmother
- Y is R's wife ⇒ R is Y's husband
- Therefore, Q is R's wife's maternal great-grandmother
- In Indian terms: Q is R's saas ki dadi (mother-in-law's grandmother)
Answer: Q is R's mother-in-law's grandmother.
These problems combine blood relations with directional information (facing directions, positions, etc.), adding an extra layer of complexity.
Solved Example 1:
Kiran is standing to the right of Gita. Gita is the daughter of Arun. Arun is standing to the left of Meena. Meena is Arun's wife. How is Kiran related to Meena?
Solution:
- 1. Gita is daughter of Arun and Meena (since Meena is Arun's wife)
- 2. Kiran is to the right of Gita (position information)
- 3. Arun is to the left of Meena (position information)
- 4. The positions don't affect the blood relationship
- 5. Kiran could be Gita's sibling (standing next to her) or another relative
- 6. Most straightforward interpretation: Kiran is Gita's sibling (since no other info given)
- 7. Therefore, Kiran is child of Arun and Meena
Answer: Kiran is Meena's son or daughter (most likely child).
Q: Rohan is facing north. To his left is Priya, who is his sister. To Priya's left is Vikram, who is Rohan's father. Facing Vikram is Neha, who is Vikram's wife. How is Neha related to Priya?
Solution:
- Rohan is facing north, Priya to his left ⇒ Priya is west of Rohan
- Vikram is to Priya's left ⇒ Vikram is south of Priya (west of Rohan)
- Neha is facing Vikram ⇒ If Vikram is facing north, Neha would be south of him
- Vikram is Rohan's father and Priya's father (since Priya is Rohan's sister)
- Neha is Vikram's wife ⇒ Neha is mother of Rohan and Priya
- Direction information confirms they're in a family group but doesn't change relationship
Answer: Neha is Priya's mother.
These problems combine blood relations with professional relationships, requiring careful distinction between familial and professional connections.
Solved Example 1:
In a family, the engineer is the son of the doctor. The lawyer is the daughter of the engineer. The teacher is the brother of the lawyer. How is the teacher related to the doctor?
Solution:
- 1. Engineer is son of doctor ⇒ Doctor is parent of engineer
- 2. Lawyer is daughter of engineer ⇒ Engineer is parent of lawyer
- 3. Teacher is brother of lawyer ⇒ Teacher is son of engineer (since lawyer is engineer's daughter)
- 4. Therefore, teacher is grandson of doctor
Answer: The teacher is the doctor's grandson.
Q: The pilot is married to the dancer. The surgeon is the son of the pilot. The chef is the daughter of the surgeon. The engineer is married to the chef. How is the engineer related to the dancer?
Solution:
- Pilot is married to dancer ⇒ They are spouses
- Surgeon is son of pilot ⇒ Surgeon is child of pilot and dancer
- Chef is daughter of surgeon ⇒ Chef is grandchild of pilot and dancer
- Engineer is married to chef ⇒ Engineer is spouse of chef
- Therefore, engineer is son-in-law/daughter-in-law of surgeon, and grandchild-in-law of dancer
- Most precise answer: Engineer is dancer's granddaughter's husband
Answer: The engineer is the dancer's granddaughter's husband.
Step-by-Step Solving Techniques
Family Tree Diagram
Visual representation is the most effective way to solve complex blood relation problems. Drawing a family tree helps visualize relationships clearly.
- Start with the person mentioned first as the base
- Add generations vertically (parents above, children below)
- Use standard symbols: □ for male, ○ for female, ═ for marriage, │ for parent-child
- Label each person with their name and relationship
- Update the tree as you process each statement
Example:
"A is B's father. C is B's wife. D is C's mother."
Draw A at top, B below connected by vertical line. C to right of B with marriage line. D above C.
Generation Mapping
Assign generations to each person to maintain hierarchy and avoid confusion in multi-generational problems.
- Assign Generation 0 to the oldest person mentioned
- Each subsequent generation gets +1 (children = parent's generation +1)
- Note generation numbers next to each person
- Helps identify relationships like "great-grandfather" (difference of 2 generations)
- Particularly useful when ages or "elder/younger" are involved
Example:
"E is F's grandfather. G is F's sister. H is G's daughter."
E: Gen 0, F: Gen 2, G: Gen 2, H: Gen 3. Therefore E is H's great-grandfather.
Relationship Terminology
Mastering precise relationship terms is crucial for accurate interpretation of problems.
- Memorize basic terms: maternal (mother's side), paternal (father's side)
- In-laws: Relationships through marriage (sister-in-law, mother-in-law)
- Half-relations: When siblings share only one parent
- Step-relations: Through remarriage of parents
- Gender-specific terms: Uncle (father's brother), Aunt (father's sister)
Example:
"Father's only son's wife's mother"
Father's only son = self (if male) or brother. His wife's mother = mother-in-law.
Statement Breakdown
Break complex statements into smaller, manageable parts to analyze relationships systematically.
- Identify the subject and object in each statement
- Parse the statement from right to left or inside out
- Replace phrases with simpler terms (e.g., "my father's son" = "me or my brother")
- Resolve innermost relationships first
- Combine the resolved parts to get final relationship
Example:
"My mother's husband's only sister's son"
Mother's husband = father → father's only sister = paternal aunt → her son = cousin.
Gender Identification
Pay close attention to gender-specific terms as they can be crucial in determining correct relationships.
- Note gender-revealing words: son, daughter, brother, sister, husband, wife
- Indian terms like "mausi" (mother's sister), "chacha" (father's younger brother)
- Some relations are gender-neutral (cousin) while others are specific (uncle/aunt)
- Watch for pronouns (he/she) in problems
- In-law relationships depend on your own gender
Example:
"My father's only daughter's husband"
Father's only daughter = me (if female) or sister → her husband = my husband or brother-in-law.
Elimination Method
When multiple options are given, eliminate impossible choices systematically.
- List all possible relationships based on given information
- Cross-check each option against the family tree
- Eliminate options that violate basic rules (e.g., someone can't be their own grandfather)
- Watch for absolute terms like "only son", "eldest daughter"
- Verify remaining options for consistency
Example:
If options are: (a) Uncle (b) Father (c) Brother (d) Grandfather for "My father's only son"
Father's only son = me (if male) or brother → can't be father or grandfather → eliminate b,d. If I'm male, it's me (none), else brother → answer (a) or (c).
📚 Topic-Wise Practice Worksheets
Master Blood Relation Puzzles with our structured practice materials
Each worksheet includes detailed solutions and explanations
Simple Direct Relation Free
10 worksheets available
Simple Direct Relation problems present straightforward family relationships between two individuals. You need to identify the relation based on a single statement like 'A is the father of B' or 'C is the sister of D'. These problems test your basic understanding of family relationship terminology and serve as the foundation for more complex blood relation puzzles.
Twin Relation Free
10 worksheets available
Twin Relation problems involve twins - two children born from the same pregnancy. Twins have identical ages and share the same parents. These problems test your understanding of special sibling relationships where age equality provides additional clues for solving puzzles.
Reverse Relation Free
10 worksheets available
Reverse Relation problems present a relationship in one direction and ask for the relationship in the opposite direction. For example, 'A is the father of B' and you must find what B is to A. These problems test your understanding of reciprocal family relationships.
Two Step Chain Free
10 worksheets available
Two Step Chain problems involve connecting two relationships to find the relationship between two persons who are not directly connected. For example, 'A is the father of B' and 'B is the brother of C' - you need to find the relationship between A and C. These problems test your ability to chain relationships logically.
Mixed Gender Relations Free
10 worksheets available
Mixed Gender Relations problems involve relationships where gender-specific terms (like father, mother, brother, sister) provide clues about the gender of individuals. These problems test your ability to track gender information through relationship chains and handle cases where gender is not specified.
Cousin Relationships Free
10 worksheets available
Cousin Relationships problems involve identifying relationships between children of siblings. First cousins share grandparents. These problems test your understanding of extended family relationships and the ability to trace connections through multiple generations.
Family Counting Free
10 worksheets available
Family Counting problems require you to determine the number of males, females, or total members in a family based on given relationship statements. These problems test your ability to build a family tree and count individuals without duplication.
Age Clue Relations Free
10 worksheets available
Age Clue Relations problems combine family relationships with age information. Statements like 'A is older than B' or 'C was born after D' provide additional clues to determine relationships, especially when direct relationship statements are ambiguous. These problems test your ability to integrate temporal information with family structures.
Three Step Complex Chain Free
10 worksheets available
Three Step Complex Chain problems involve connecting three or more relationships to find the relationship between two persons. These problems require chaining multiple relationships (e.g., 'A is father of B', 'B is brother of C', 'C is mother of D' - find relation between A and D). These problems test advanced relationship chaining skills.
Generation Gap Puzzle Free
10 worksheets available
Generation Gap puzzles involve determining the number of generations between two persons or identifying relationships across multiple generations (e.g., great-grandparent, great-grandchild, great-aunt). These problems test your understanding of generational hierarchy in family trees.
Indirect Statement Free
10 worksheets available
Indirect Statement problems present relationships using possessive constructions like 'A's mother is B's daughter' instead of direct statements like 'A is the brother of B'. You must decode these indirect phrasings to find the relationship between persons. These problems test your ability to parse complex family relationship statements.
Multiple Wives Structure Free
10 worksheets available
Multiple Wives Structure problems involve families with one person married to multiple spouses. These create half-sibling relationships (children sharing only one parent) and complex in-law relationships. These problems test your ability to handle non-traditional family structures.
Table Deduction Puzzle Free
10 worksheets available
Table Deduction Puzzles combine blood relation problems with tabular data. You are given a grid or table with family members and attributes (like professions, ages, or positions), and must deduce relationships using both the table data and relationship statements. These problems test integrated logical reasoning.
Ambiguity Puzzle Free
10 worksheets available
Ambiguity Puzzles present blood relation problems where the given information is insufficient to determine a unique relationship. Multiple relationships are possible, or gender cannot be determined. These problems test your ability to recognize when information is incomplete and when answers like 'Cannot be determined' are correct.
Data Sufficiency Puzzle Free
10 worksheets available
Data Sufficiency puzzles present a question about a blood relation followed by two statements. You must determine whether each statement alone, or both together, provide sufficient information to answer the question uniquely. These problems test your ability to evaluate information completeness without actually solving for the answer.
Passage Puzzle Free
10 worksheets available
Passage Puzzles present a descriptive passage about a family, followed by 3-5 questions about various relationships within that family. You must read the passage carefully, build the family tree, and answer multiple questions. These problems test comprehensive reading and systematic family tree construction.
Negative Elimination Puzzle Free
10 worksheets available
Negative Elimination puzzles use 'not' statements (e.g., 'A is not the father of B', 'C is not the sister of D') to eliminate possibilities and deduce the correct relationship. These problems test your ability to use exclusion logic and process of elimination in family relationships.
Quantitative Counting Puzzle Free
10 worksheets available
Quantitative Counting puzzles involve counting the number of family members, males, females, generations, or specific relationships based on given constraints. These problems test your ability to use quantitative information (like 'there are 5 females' or '3 generations') alongside relationship statements to deduce family structures.
Edge Case Family Puzzle Free
10 worksheets available
Edge Case Family puzzles involve non-traditional family structures including adoption, step-relations, guardianship, foster care, and same-sex parent families. These problems test your understanding that family relationships can be formed through legal means (adoption, marriage) as well as biological ties.
📖 Mixed Practice Worksheets
Comprehensive worksheets combining all problem types for Blood Relation Puzzles
Perfect for exam simulation and revision
Each worksheet contains 20 mixed questions covering all problem types of Blood Relation Puzzles, with detailed solutions and answer keys.
Tips & Tricks for Blood Relation Puzzles
💡 Speed & Time Management Hacks:
- Start drawing the family tree as soon as you read the first relationship - don't try to solve entirely in your head.
- Use abbreviations (F=father, M=mother, S=son, D=daughter) to save time while drawing diagrams.
- Solve from the options backwards if the question provides multiple choices - often faster.
- Allocate maximum 45 seconds per question during practice to build speed.
- Skip extremely complex questions in exams and return to them if time permits.
⚠️ Avoid These Common Traps:
- Assuming gender - Don't presume "doctor" is male or "nurse" is female unless specified.
- Overlooking "only" - "Only son" is different from "son" (could have daughters).
- Ignoring in-law relationships - "Brother's wife" is sister-in-law, not sister.
- Mixing maternal and paternal sides - "Mother's brother" (mama) vs "father's brother" (chacha).
- Missing hidden generations - "Grandfather's son" could be father or uncle.
- Rushing through questions - Complex ones often have simple solutions if read carefully.
✅ Strategies for Success:
- Practice with previous year questions from your target exam to understand patterns.
- Create flashcards for relationship terms in Hindi and English (e.g., nana-nani, dada-dadi).
- Solve puzzles involving famous Indian families (e.g., Kapoors, Bachchans) for fun practice.
- Time yourself during practice to simulate exam pressure.
- Review mistakes thoroughly - understand why you got a relationship wrong.
🛑 Crucial Reminders:
- You cannot be your own sibling, parent, or grandparent - watch for circular references.
- In Indian context, "wife's brother" is sala, "husband's sister" is nanad - know these terms.
- Blood relations are always through birth or adoption, not marriage.
- Double-check when a problem involves both blood and marital relationships.
- In exams, answer what is asked - don't overcomplicate simple questions.
📚 Frequently Asked Questions About Blood Relation Puzzles
Blood Relation Puzzles are logical reasoning problems that test your ability to decipher familial relationships between people based on given information. They typically present a series of statements about how different individuals are related, and you must determine the specific relationship between two designated persons.
These puzzles are crucial for competitive exams because:
- They evaluate analytical thinking and logical deduction skills
- They test your ability to process information systematically
- They appear frequently in SSC, Banking, UPSC, and other government exams
- They can be solved quickly with practice, making them high-scoring
- They assess attention to detail and ability to avoid common traps
To master Blood Relation Puzzles efficiently:
- Memorize basic relationship terms in both English and Hindi (e.g., maternal/paternal, chacha/mama, nani/dadi)
- Practice drawing quick family trees - this is the single most effective technique
- Start with simple problems and gradually increase complexity
- Learn to parse complex statements by breaking them into smaller parts
- Solve previous year questions from your target exam to understand patterns
- Time yourself during practice to build speed
- Analyze mistakes thoroughly to avoid repeating them
- Create mnemonics for confusing relationships
Daily practice of 10-15 questions with proper technique analysis yields best results.
Blood Relation questions feature prominently in these major Indian competitive exams:
Government Recruitment Exams:
- SSC CGL, CHSL, CPO, Steno
- UPSC CSAT (Civil Services Preliminary)
- IBPS PO, Clerk, SO (Banking Exams)
- SBI PO, Clerk, SO Exams
- RRB NTPC, Group D, ALP (Railway Exams)
- Defense Exams (CDS, AFCAT, CAPF)
Other Important Exams:
- CAT, XAT, MAT (Management Entrance)
- State PSCs (UPPSC, MPPSC, BPSC, etc.)
- Insurance Sector (LIC AAO, NIACL AO)
- University Entrance Exams
- Staff Selection Commission Exams
- Combined Defence Services (CDS)
The difficulty level varies, with banking exams typically having moderate questions and CAT having more complex ones.
Blood Relation Puzzles are generally considered a moderate difficulty topic in competitive exams, but this varies:
- Basic problems are easy and high-scoring once concepts are clear
- Moderate problems involve 2-3 step reasoning and are common in banking/SSC
- Complex problems (multi-generational, coded relations) appear in CAT/UPSC
Common Pitfalls to Avoid:
- Gender assumptions: Presuming unspecified genders (e.g., assuming doctor is male)
- Overlooking key words: Missing "only", "eldest", "youngest" in questions
- In-law confusion: Mixing blood relations with marital relations
- Generational errors: Miscounting generations in complex problems
- Cultural terms: Not knowing Indian specific terms like "mausi", "bhanja"
- Circular references: Creating impossible relationships (someone being their own ancestor)
- Rushing: Solving too quickly without verifying each step
The most effective strategy to master Blood Relation Puzzles involves a systematic approach:
1. Foundation Building:
- Memorize all basic relationship terms in English and Hindi
- Understand Indian-specific terms (mama, mausi, nana, nani, etc.)
- Learn standard family tree symbols and drawing conventions
2. Skill Development:
- Practice with simple problems first, ensuring 100% accuracy
- Gradually increase difficulty level
- Develop your own shorthand for quick diagramming
- Learn to parse complex statements methodically
3. Exam-Oriented Practice:
- Solve previous 5 years' questions from your target exam
- Practice under timed conditions (max 45 seconds per question)
- Analyze mistakes to identify weak areas
- Focus on question patterns specific to your exam
4. Advanced Techniques:
- Learn to solve from options when stuck
- Develop verification methods to check answers
- Practice mental visualization for simple problems
- Create mnemonics for confusing relationships
Pro Tip: Consistent daily practice of 15-20 quality questions with proper analysis yields better results than sporadic, high-volume practice sessions.
Sandeep Nehra
B.Tech (Mech) | MBA (HRM & IB) | Lead Developer & Reasoning Expert (16+ Yrs)
Sandeep is a Mechanical Engineer and dual MBA (HR & International Business) with over 16 years of experience as a Senior Web Architect and Tech Lead. Combining his engineering precision with deep behavioral insights, he founded ReasoningAbility.com to revolutionize competitive exam preparation. His unique methodology — blending logical structuring from engineering with psychological clarity from HRM — helps aspirants crack BITSAT, SSC, and Banking exams faster. His mission remains simple: provide high-quality, free practice resources that turn complex logic into accessible, high-speed solving techniques for students worldwide.