Understanding Blood Relations in Coded Language

The problem asks us to determine the relationship between Q and T based on a given expression 'P + Q × R - S ÷ T' and a set of coded relations. Let's first understand the meaning of each symbol in the given code language:

• A + B means 'A is the mother of B'
• A - B means 'A is the sister of B'
• A × B means 'A is the husband of B'
• A ÷ B means 'A is the daughter of B'

Decoding the Expression 'P + Q × R - S ÷ T'

Now, let's break down the given expression step by step and translate each part into blood relations:

1. P + Q: According to the code, A + B means 'A is the mother of B'. So, P + Q means 'P is the mother of Q'.
2. Q × R: According to the code, A × B means 'A is the husband of B'. So, Q × R means 'Q is the husband of R'. This also implies that R is the wife of Q.
3. R - S: According to the code, A - B means 'A is the sister of B'. So, R - S means 'R is the sister of S'.
4. S ÷ T: According to the code, A ÷ B means 'A is the daughter of B'. So, S ÷ T means 'S is the daughter of T'.

Building the Family Relationships

Let's combine these individual relationships to establish connections between the individuals P, Q, R, S, and T:

• P is the mother of Q.
• Q is the husband of R. (So, R is the wife of Q).
• R is the sister of S.
• S is the daughter of T.

Since S is the daughter of T and R is the sister of S, R is also the daughter of T (assuming they share the same parent, T). We have established that Q is the husband of R.

Therefore, Q is the husband of T's daughter (R).

Determining Q's Relation to T

We need to find out how Q is related to T. From our analysis:

• S is the daughter of T.
• R is the sister of S, so R is also the daughter of T.
• Q is the husband of R.

Since Q is the husband of T's daughter (R), Q is T's daughter's husband.

Verifying the Answer

Let's check the derived relationship against the given options:

• Option 1: Wife's mother (This doesn't match).
• Option 2: Sister (This doesn't match).
• Option 3: Daughter's husband (This matches our derived relationship).
• Option 4: Mother (This doesn't match).

Our conclusion that Q is T's daughter's husband aligns with Option 3.

Summary of Relationships

From R is sister of S and S is daughter of T, we get R is daughter of T. Since Q is husband of R, Q is husband of T's daughter.

Revision Table: Coded Blood Relations

Additional Information on Blood Relation Reasoning

Blood relation questions test your ability to understand and decode relationships between individuals in a family. These questions often involve symbols or coded language to represent relationships, or they might be presented in a descriptive paragraph.

Key strategies for solving blood relation problems:

• Draw a family tree: Visualizing the relationships can make it easier to trace connections. Use symbols for gender (e.g., circle for female, square for male) and relationships (e.g., double line for marriage, single line for siblings, vertical line for parent-child).
• Break down complex statements: If the relation is given in a coded expression or a long sentence, break it into smaller, manageable parts.
• Start with a definite relationship: Identify a clear relationship (like a parent-child or marital link) to begin building your tree or tracing the path.
• Determine the gender of individuals whenever possible, as relationships like brother, sister, husband, wife, son, daughter depend on gender.
• Pay attention to the question: Always confirm whose relation to whom is being asked. "How is A related to B?" is different from "How is B related to A?".

Practicing various types of blood relation problems, including coded relations, helps improve speed and accuracy in competitive exams.