Solving Blood Relation Coding Questions

This question requires us to decode a given expression based on a set of rules for symbolic relations and then determine the relationship between two individuals mentioned in the expression. The expression is P ÷ Q - L + N × M, and we need to find how N is related to Q.

Understanding the Code Language

The provided code language uses symbols to represent family relationships:

• G + T means 'G is the father of T'
• G - T means 'G is the sister of T'
• G × T means 'G is the brother of T'
• G ÷ T means 'G is the daughter of T'

Breaking Down the Expression: P ÷ Q - L + N × M

Let's break down the expression segment by segment from left to right:

1. P ÷ Q: According to the rule 'G ÷ T means G is the daughter of T', P ÷ Q means P is the daughter of Q. This tells us that Q is the parent of P, and P is female.
2. Q - L: According to the rule 'G - T means G is the sister of T', Q - L means Q is the sister of L. This tells us that Q is female. Since Q is the parent of P and is female, Q is the mother of P. L is the sibling of Q.
3. L + N: According to the rule 'G + T means G is the father of T', L + N means L is the father of N. This tells us that L is male, and N is the child of L.
4. N × M: According to the rule 'G × T means G is the brother of T', N × M means N is the brother of M. This tells us that N is male, and M is the sibling of N.

Tracing the Relationship between N and Q

Now let's connect the relationships to find how N is related to Q:

• From (1) and (2), we know Q is P's mother and L's sister.
• From (3), we know L is N's father.
• Since Q is L's sister and L is N's father, Q is N's aunt (specifically, father's sister).
• We need to find how N is related to Q. N is the son of L, and L is the brother of Q (since Q is the sister of L, and L is male).
• Therefore, N is the son of Q's brother.
• From (4), we confirmed N is male (brother of M), which is consistent with being a son.

So, N is the son of Q's brother.

Summary of Relationships

Combining the relations: Q is the sister of L, and L is the father of N. This means N is the son of Q's brother.

Conclusion

Based on the analysis of the expression P ÷ Q - L + N × M, N is the son of Q's brother. Thus, N is Q's brother's son.

Revision Table

Additional Information on Blood Relations and Coding

Blood relation problems in reasoning test your ability to understand and interpret familial relationships. When symbols are used to represent these relationships, it's called coded blood relations. To solve these problems effectively:

• Carefully note down the meaning of each symbol.
• Break the given expression into smaller parts based on the symbols.
• Deduce the relationship for each part.
• Combine the deduced relationships sequentially to find the overall relationship between the required individuals.
• It can be helpful to draw a family tree or diagram to visualize the relationships, indicating gender where known (e.g., using + for male and - for female).
• Always read the question carefully to understand who is related to whom (e.g., 'How is A related to B?' vs. 'How is B related to A?').

Practice with different types of coded relations and expressions improves speed and accuracy in solving these questions, which are common in competitive exams.