Understanding Blood Relation Symbols

In blood relation questions, symbols are often used to represent family relationships. We need to carefully decode these symbols to understand the connections between different people mentioned in the expression.

Given the definitions:

• 'A @ B' means 'A is the mother of B'
• 'A % B' means 'A is the brother of B'

The given expression is: G @ P % U % V @ R

Let's break down the expression step by step to establish the relationships:

• G @ P: According to the definition of '@', G is the mother of P.
• P % U: According to the definition of '%', P is the brother of U. Since G is the mother of P, and P is the brother of U, G must also be the mother of U. This means P and U are siblings.
• U % V: According to the definition of '%', U is the brother of V. Since G is the mother of U, and U is the brother of V, G must also be the mother of V. This means U and V are siblings. Combining with the previous step, P, U, and V are siblings, and G is their mother.
• V @ R: According to the definition of '@', V is the mother of R.

Now, let's summarize the relationships derived from the expression G @ P % U % V @ R:

• G is the mother of P.
• P is the brother of U.
• U is the brother of V.
• V is the mother of R.

From these relationships, we can infer that P, U, and V are siblings, and G is their mother. V is the mother of R.

Let's analyze each given statement based on these derived blood relations:

Analysis of Statements:

• Statement 1: U is the father of R. We found that V is the mother of R, and U is the brother of V. This makes U the maternal uncle of R, not the father. This statement is incorrect.
• Statement 2: G is the mother of V. From our step-by-step analysis, we deduced that G is the mother of P, P is the brother of U, and U is the brother of V. This establishes P, U, and V as siblings, with G as their mother. This statement is correct.
• Statement 3: R is the daughter of G. We know G is the mother of V, and V is the mother of R. This means G is the maternal grandmother of R. R is a granddaughter of G, but not a daughter. This statement is incorrect.
• Statement 4: U is the sister of R. We know U is the brother of V, and V is the mother of R. This means U is the maternal uncle of R. U is male (brother), so U cannot be the sister of R. This statement is incorrect.

Based on the analysis of each statement against the relationships derived from the expression G @ P % U % V @ R, the only correct statement is "G is the mother of V".

Combining the first three parts: G is mother of P, P is brother of U, U is brother of V. This implies P, U, and V are siblings (though gender of V is not determined by % relationship with U). Since G is the mother of P, who is a sibling to U and V, G is the mother of U and V as well.

Revision Table: Blood Relation Decoding

When solving blood relation problems with coded relationships, it's crucial to carefully apply the given definitions to each part of the expression sequentially. Building a simple family tree or listing the derived relationships helps in checking the options accurately.

Additional Information: Tips for Solving Blood Relations

• Always start decoding the expression from left to right, establishing relationships step by step.
• Note down the gender of individuals if specified by the relationship (e.g., 'mother' is female, 'brother' is male).
• For complex expressions, draw a diagram or family tree to visualize the connections.
• Carefully read each option and verify it against the relationships you have established from the expression.
• Be mindful of the difference between direct relations (like mother, father) and indirect relations (like uncle, aunt, grandparent).