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Question

X and Z are sisters. Y is the brother of Z. S is the daughter of Z. T is the brother of S. T is married to U. How is Y related to S?

The correct answer is

Mother’s brother

Solving Family Relationship Questions

Understanding family relationships is key to solving these types of reasoning problems. We are given several relationships and asked to determine the connection between two individuals, Y and S.

Analyzing the Given Relationships

Let's break down the information provided step-by-step to build a clear picture of the family structure:

  • $\text{X}$ and $\text{Z}$ are sisters. This means $\text{X}$ and $\text{Z}$ are siblings of the same generation.
  • $\text{Y}$ is the brother of $\text{Z}$. Since $\text{X}$ and $\text{Z}$ are sisters, $\text{Y}$ is also the brother of $\text{X}$. $\text{Y}$, $\text{X}$, and $\text{Z}$ are siblings.
  • $\text{S}$ is the daughter of $\text{Z}$. This places $\text{S}$ in the generation after $\text{Z}$. $\text{Z}$ is the mother of $\text{S}$.
  • $\text{T}$ is the brother of $\text{S}$. This means $\text{S}$ and $\text{T}$ are siblings. Since $\text{S}$ is the daughter of $\text{Z}$, $\text{T}$ is the son of $\text{Z}$. So, $\text{Z}$ is the mother of both $\text{S}$ and $\text{T}$.
  • $\text{T}$ is married to $\text{U}$. This information introduces $\text{U}$ as the spouse of $\text{T}$, but it does not directly affect the relationship between $\text{Y}$ and $\text{S}$.

Deducing the Relationship between Y and S

We need to find out how $\text{Y}$ is related to $\text{S}$.

From our analysis:

  • $\text{Z}$ is the mother of $\text{S}$.
  • $\text{Y}$ is the brother of $\text{Z}$.

Therefore, $\text{Y}$ is the brother of $\text{S}$'s mother ($\text{Z}$). The brother of one's mother is called a maternal uncle.

So, $\text{Y}$ is the maternal uncle of $\text{S}$. This relationship is also described as "Mother's brother".

Evaluating the Options

Let's compare our deduced relationship with the given options:

Option Relationship Match with Y and S?
1 Father No. $\text{Y}$ is in the generation above $\text{S}$, but he is $\text{S}$'s mother's brother, not her father. $\text{S}$'s father would be $\text{T}$'s father (married to $\text{Z}$).
2 Mother’s brother Yes. $\text{Z}$ is $\text{S}$'s mother, and $\text{Y}$ is $\text{Z}$'s brother. So $\text{Y}$ is $\text{S}$'s mother’s brother.
3 Brother No. $\text{T}$ is $\text{S}$'s brother. $\text{Y}$ is in the previous generation.
4 Mother’s father No. $\text{S}$'s mother is $\text{Z}$. $\text{S}$'s mother's father would be $\text{S}$'s maternal grandfather. $\text{Y}$ is $\text{Z}$'s brother, not her father.

Based on the analysis, the relationship between $\text{Y}$ and $\text{S}$ is mother's brother.

Conclusion on Family Relationship

By carefully tracing the connections provided in the statements, we determined that $\text{Y}$ is the brother of $\text{S}$'s mother, $\text{Z}$. This makes $\text{Y}$ the maternal uncle of $\text{S}$.

Revision Table: Key Relationships

Individuals Relationship
$\text{X}, \text{Z}$ Sisters
$\text{Y}, \text{Z}$ Y is Brother of Z
$\text{Y}, \text{X}$ Y is Brother of X
$\text{Z}, \text{S}$ Z is Mother of S
$\text{Z}, \text{T}$ Z is Mother of T
$\text{S}, \text{T}$ S is Sister of T (or T is Brother of S)
$\text{Y}, \text{S}$ Y is Mother's Brother of S (Maternal Uncle)

Additional Information: Family Tree Concepts

Solving family relationship problems often involves building a mental or physical family tree. Here are some common relationships and terms:

  • Siblings: Brothers and sisters.
  • Parents: Mother and father.
  • Children: Sons and daughters.
  • Grandparents: Parents of your parents (Paternal grandfather/grandmother, Maternal grandfather/grandmother).
  • Grandchildren: Children of your children.
  • Uncle/Aunt: Brother/Sister of your parents (Paternal uncle/aunt, Maternal uncle/aunt).
  • Nephew/Niece: Son/Daughter of your siblings.
  • Cousins: Children of your parents' siblings.
  • Spouse: Husband or wife.

By identifying the generation and the connecting relatives (like 'mother' or 'brother'), you can accurately determine the relationship between any two individuals in the given scenario.

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Important Questions from Family Tree Problems

  1. Saloni is the daughter of the only son of Kartik. Nirupama is the mother of Deepak. Yamini’s only son, Ankit, is married to Nirupama. Kartik is the paternal grandfather of Deepak. How is Kartik related to Ankit?

  2. P, L, T, B, N and D are six members of a business family. N is the son of B, who is not the mother of N. L is the brother of B. D and B are a married couple. T is the daughter of D, who is the sister of P. How is N related to T?

  3. 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?

  4. P is the brother of Q. S is the father of P. R is the brother of S. If T is the mother of R, then how is P related to T?

  5. There are seven members, B, C, D, E, F, G and H, in a family. H is the only daughter-in- law of D. E is the sister of C. C is the only son of F, who is the wife of D. B and G are the sons of H. How is G related to F?

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