All Exams Test series for 1 year @ ₹349 only
Question

Jahnavi is the sister of Taruni. Taruni is married to Dilip. Dilip is the father of Raghu. Manoj is the son of Hema. Taruni is the mother-in-law of Hema. Dilip has only one son and no daughter. Jahnavi is married to Barun. Lekha is the daughter of Barun. How is Jahnavi’s sister related to Manoj’s paternal grandfather?

This question was previously asked in
SSC CGL 2020 (Tier-2) Statistics Previous Year Paper 3 (28-Jan-2022)
The correct answer is

Wife

Understanding Blood Relations for Exam Questions

Blood relation questions test your ability to understand and decipher the relationships between different members of a family. The key is to build a step-by-step family tree or diagram based on the information given.

Step-by-Step Analysis of the Relationships

Let's break down the given statements to establish the family connections:

  1. "Jahnavi is the sister of Taruni."
    This tells us Taruni and Jahnavi are siblings, specifically sisters.
  2. "Taruni is married to Dilip."
    Taruni and Dilip form a couple.
  3. "Dilip is the father of Raghu."
    This means Raghu is the son of Dilip. Since Dilip is married to Taruni, Raghu is also the son of Taruni.
  4. "Dilip has only one son and no daughter."
    This confirms that Raghu is the only child of Dilip (and Taruni).
  5. "Manoj is the son of Hema."
    Hema is Manoj's mother.
  6. "Taruni is the mother-in-law of Hema."
    Taruni is the mother-in-law of Hema. A mother-in-law is the mother of one's spouse. Taruni is the mother of Raghu. This implies Hema is married to Raghu.
  7. "Jahnavi is married to Barun."
    Jahnavi and Barun form a couple.
  8. "Lekha is the daughter of Barun."
    Lekha is the daughter of Barun. Since Barun is married to Jahnavi, Lekha is also the daughter of Jahnavi.

Building the Family Structure

Based on the statements, we can map out the relationships:

  • Generation 1: Taruni (married to Dilip), Jahnavi (married to Barun) - Sisters.
  • Generation 2: Raghu (son of Dilip and Taruni), Hema (married to Raghu), Lekha (daughter of Barun and Jahnavi) - Cousins (Raghu/Hema's child and Lekha are cousins).
  • Generation 3: Manoj (son of Raghu and Hema).

We can visualize this structure:

Individual(s) Relationship to others
Taruni & Jahnavi Sisters
Taruni & Dilip Married Couple
Raghu Son of Taruni & Dilip (Only child)
Raghu & Hema Married Couple
Manoj Son of Raghu & Hema
Jahnavi & Barun Married Couple
Lekha Daughter of Jahnavi & Barun

Identifying the Key Individuals for the Question

The question asks: "How is Jahnavi’s sister related to Manoj’s paternal grandfather?"

Let's identify these two individuals:

  • Jahnavi's sister: From statement 1, Jahnavi's sister is Taruni.
  • Manoj's paternal grandfather:
    • Manoj's father is Raghu (from statement 5 and 6 - Manoj is son of Hema, Hema is married to Raghu, so Raghu is Manoj's father).
    • A paternal grandfather is the father of one's father.
    • So, Manoj's paternal grandfather is Raghu's father.
    • From statement 3, Dilip is the father of Raghu.
    • Therefore, Manoj's paternal grandfather is Dilip.

So the question simplifies to: "How is Taruni related to Dilip?"

Determining the Final Relationship

From statement 2, we know that "Taruni is married to Dilip".

Therefore, Taruni is the wife of Dilip.

Jahnavi's sister (Taruni) is related to Manoj's paternal grandfather (Dilip) as his wife.

Revision Table: Key Relationships

Person A Relation Person B
Jahnavi Sister of Taruni
Taruni Married to Dilip
Dilip Father of Raghu
Raghu Son of Taruni & Dilip
Raghu Married to Hema
Manoj Son of Raghu & Hema
Dilip Paternal Grandfather of Manoj
Taruni Wife of Dilip

Additional Information: Understanding Blood Relation Terms

  • Sibling: A brother or sister.
  • Spouse: A husband or wife.
  • Paternal Grandfather: The father of one's father.
  • Maternal Grandfather: The father of one's mother.
  • Paternal Grandmother: The mother of one's father.
  • Maternal Grandmother: The mother of one's mother.
  • Mother-in-law: The mother of one's spouse.
  • Father-in-law: The father of one's spouse.
  • Son-in-law: The husband of one's daughter.
  • Daughter-in-law: The wife of one's son.
  • Brother-in-law: The brother of one's spouse, or the husband of one's sibling.
  • Sister-in-law: The sister of one's spouse, or the wife of one's sibling.

Solving blood relation problems often involves constructing a family tree diagram to visualize the connections clearly. Always start with the most direct relationships and expand outwards.

Was this answer helpful?

Similar Questions

  1. If Arpita is the only daughter of Pritam's wife's mother's husband, then how is Arpita related to Pritam's son?

  2. In a family of eight persons, there are two couples, each having two children. C and D are cousin brothers. The father of E is married to G, who is the aunt of F. F’s mother, H is married to B, the brother of A. C is the nephew of H. How is A related to D?

  3. There is a family of five members: K, L, M, N and O. Among them, there is one married couple. O is unmarried and is the brother of K. N is the sister of O. M is the only married female and the mother of N. L and O are the only males in the group.

    Who is the father of K?

  4. Guna is the son of Shyamala. Hemanth is the father of Manu. Guna is married to Deepa. Guna and Manu are siblings. Prathik is the brother of Deepa. Shyamala has only one son. Roshan is the son of Guna. Prathik is the father of Kalki. Jatin is the son of Manu. Prathik has no daughters.

    How is Hemanth related to Roshan's father?

  5. Pamila is the granddaughter of Akun who is married to Nikita. Murali is the brother-in-law of Akun who has two daughters but no son. Rahul is the cousin of Kamal and brother of Pamila. Uday and Vanmay are the sons-in-law of Nikita. Vanmay is married to Yamini and they have two daughters and one son. Uday has one son and one daughter. Tina and Smita are the daughters of Yamini. Murali is unmarried. How is Yamini related to Rahul?

  6. Mahesh is the father of Riva and paternal grandfather of Vansh. Aakash is the brother of Riva and father of Vansh and Ritu. Ritu is the only daughter of Aakash and Maya. How is Maya related to Mahesh?

  7. Ramesh is the father of Manideep. Ramesh has only two children. Manideep is the brother of Niharika. Niharika is the daughter of Kavita. Ananya is the granddaughter of Kavita. Sujit is the father of Ananya. How is Sujit related to Manideep?

  8. In a family of seven persons, B is the brother of A and the son of C. D is the son-in-law of C, who has two grandchildren, E and F. A is the mother of F, who is the niece of G. E is the son of G. If C has two children, how is E related D?

  9. P and Q are brothers. P is the father of S. R is the only son of Q. Q is married to U. How is U related to S?

  10. ‘A + B’ means ‘A is the daughter of B’.

    ‘A - B’ means ‘A is the brother of B’.

    ‘A × B’ means ‘A is the mother of B’.

    ‘A ÷ B’ means ‘A is the son of B’.

    If U + C × Q – P ÷ R ÷ S – T, then how is S related to U?

Important Questions from Family Tree Problems

  1. Six members of a family namely A, B, C, D, E and F are travelling together. B is the son of C but C is not the mother of B. A and C are married couple. E is the brother of C, D is the daughter of A. F is the brother of B. How many male members are there in the family?
  2. Sunil is the son of Kesav. Simran, who is Kesav's sister, has a son Maruti and daughter Sita. Prem is the maternal uncle of Maruti. How is Sunil related to Maruti?
  3. A and B are brothers. C and D are sisters. A's son is D's brother. How is B related to C?

  4. A is B's sister. C is B's mother. D is C's father. E is D's mother. Then, how is A related to D?

  5. Shanti’s daughter Chandini is married to Abhi. Anchal is married to Sandy, the grandson of Shanti. Abhi's grandson is Karan. Rashmi is the mother of Karan. Shaurya is Anchal's son. How is Shaurya related to Karan?

Need Expert Advice?
Upcoming Exams
SSC CGL
September 30, 2026
UPSSSC PET
October 23, 2026
Test Series
SSC CGL img
SSC
SSC CGL (Tier I + Tier II) 2026 Mock Test Series - Latest Pattern
2503 Tests 6 Tests Free
5342 Attempts
4.2(867)
English, Hindi

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App