Understanding Blood Relations: Solving the Puzzle

This question asks us to determine the relationship between a girl's mother and Sunil based on Sunil's statement about the girl.

Let's break down Sunil's statement piece by piece to understand the relationships involved:

• Sunil says, "my mother's father". This person is Sunil's maternal grandfather.
• Sunil then refers to "the only son of my mother's father". Since his mother's father is his maternal grandfather, the only son of his maternal grandfather is his mother's only brother. This person is Sunil's maternal uncle.
• Sunil says, "Her mother's brother is the only son of my mother's father". Combining this with the previous point, this means the girl's mother's brother is Sunil's maternal uncle.
• So, the girl's mother's brother is Sunil's maternal uncle. For someone's brother to be Sunil's maternal uncle, that person must be a sibling of Sunil's mother. This means the girl's mother is either Sunil's mother or Sunil's mother's sister (his maternal aunt).
• Sunil adds, "the brother has only one sister". This refers to the girl's mother's brother (who is Sunil's maternal uncle). If this uncle has only one sister, and we know Sunil's mother is one of his sisters, then Sunil's mother must be the only sister.
• Since the girl's mother is a sister of Sunil's maternal uncle, and Sunil's mother is the only sister of that uncle, the girl's mother must be Sunil's mother.

Let's summarize the relationships:

Therefore, the girl's mother is Sunil's mother.

Final Answer Derivation

Following the step-by-step analysis of the blood relations given in Sunil's statement, we conclude that the girl's mother is the same person as Sunil's mother.

Based on this analysis, the relationship between the girl's mother and Sunil is that she is his Mother.

Revision Table: Blood Relations Analysis

Additional Information on Blood Relations Puzzles

Blood relations questions test your ability to understand and decode the relationships between different family members. These puzzles often involve tracing relationships through multiple steps.

• Key Terms: Familiarize yourself with common relationship terms like maternal (related through mother), paternal (related through father), uncle, aunt, cousin, niece, nephew, grandfather, grandmother, etc.
• Diagramming: For complex problems, drawing a family tree diagram can be very helpful. Use symbols for male, female, and different types of relationships (sibling, parent-child, spouse).
• Break Down the Statement: Always break the given statement into smaller, manageable parts, starting from the perspective of the speaker (like "my" in this case).
• Work Backwards: Sometimes it's easier to start from the end of the statement and work your way back to the beginning or the person in question.

Practicing different types of blood relation puzzles helps improve logical reasoning and problem-solving skills.