Question

P is the mother of Q. Q is the sister of R. How is P related to R?

• A. Aunt
• B. Mother
• C. Grandmother
• D. Cousin

Answer 1

Answer:

B. Mother

Analyzing the Relationships

• Statement 1: P is the mother of Q. This establishes P as the female parent of Q.
• Statement 2: Q is the sister of R. This implies that Q and R are siblings.
• Combining the facts: Since Q and R are siblings and P is the mother of Q, it follows logically that P must also be the mother of R.

Key Concepts for Blood Relation Problems

• Direct Parent-Child Relationship: If an individual is the parent of one sibling, they are automatically the parent of all siblings in that set.
• Gender Roles: 'Mother' indicates a female parent, whereas 'Father' indicates a male parent. In this problem, P's gender is explicitly defined as female.
• Visual Mapping: Drawing a simple family tree helps solve these questions quickly:
  
  • P (Mother) [Level 1]
  • |
  • Q (Sister) - R [Level 2 - Siblings]
• Note on R: Although the problem defines R's relationship to Q (as a sibling), R's gender is not specified. Regardless of whether R is male or female, P remains the mother.