Important Relations:
Sibling: Mother’s (or) father’s son – Brother
Sibling: Mother’s (or) Father’s Daughter – Sister
Maternal side: Mother’s brother – Maternal Uncle
Maternal side: Mother’s (or) Father’s sister – Aunt
Maternal side: Mother’s (or) Father’s father – Grand father
Maternal side: Mother’s (or) Father’s mother – Grand mother
Paternal side: Father’s Brother – Paternal uncle
In Laws: Son’s wife – Daughter in law
In Laws: Daughter’s husband – Son in law
In Laws: Husband’s (or) Wife’s father – Father in law
In Laws: Husband’s (or) Wife’s mother – Mother in law
In Laws: Husband’s (or) Wife’s brother – Brother in la
In Laws: Husband’s (or) Wife’s sister – Sister in law
In Laws: Sister’s husband – Brother in law
Brother’s (or) Sister’s son – Nephew
Brother’s (or) Sister’s daughter – Niece
Major types of questions: Type 1:
If A + B means A is the mother of B; A x B means A is the father of B; A $ B means A is the brother of B and A @ B means A is the sister of B then which of the following means P is the son of Q?
(A) Q + R @ P @ N (B) Q + R * P @ N
(C) Q x R $ P @ N (D) Q x R $ P $ N
Solution: (D)
Q x R = Q is the mother of R [-Q, ±R]
R $ P = R is the brother of P [+ R, ±P]
P $ N = P is the brother of N [+ P, ±N]
Therefore P is the son of Q.
Major types of questions: Type 2: A has 3 children. B is the brother of C and C is the sister of D, E who is the wife of A is the mother of D. There is only one daughter of the husband of E. what is the relation between D and B? Solution: With the chart
Therefore, D is a boy because there is only one daughter of E.
Hence, B is the brother of D.
Major types of questions: Type 3: Pointing to a photograph, Rekha says to Lalli, “The girl in the photo is the second daughter of the wife of only son of the grandmother of my younger sister.” How this girl of photograph is related to Rekha? Solution: First Method – By Generating Charts:
Second method:
- Grandmother of younger sister of Rekha → Grandmother of Rekha
- Wife of only son of grandmother → Mother of Rekha
- Younger daughter of the mother → Younger sister.
Major types of questions: Type 4: If A is the brother of B; B is the sister of C; and C is the father of D, how D is related to A? A. Brother B. Sister C. Nephew D. Cannot be determined Answer: Option D If D is Male, the answer is Nephew. If D is Female, the answer is Niece. As the sex of D is not known, hence, the relation between D and A cannot be determined. Note: Niece – A daughter of one’s brother or sister, or of one’s brother-in-law or sister-in-law. Nephew – A son of one’s brother or sister, or of one’s brother-in-law or sister-in-law.
Major types of questions: Type 5: Read the information carefully and answer the question given below it.
- A family consists of 6 members P, Q , R, X, Y, Z. 2. Q is the son of R but R is not mother of Q. 3. P and R are married couple. 4. Y is the brother of R, X is the daughter of P. 5. Z is the brother of P.
- Who is the brother in law of R?
- How many female members are there in the family?
- How is Q related to X?
- How is Y related to P?
- Q is son of R. draw this one with thick line in different horizontal rows. Both are male so take as’+’.
- Use <=> between P and R in same row, because they are couple.
- Add Y to R with dotted line in same row.
- Add X to P with thick line downwards to different row. Here, X is ‘–‘.
- Add Z to P and take Z as ‘+’.
- So, Q and X are brother & sister.
- Brother in law means wife’s brother i.e. Z
- Two female members are there with ‘-‘ symbols i.e. P and X.
- Q is brother of X.
- Y is husband’s brother to P. i.e. brother in law.
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