Blood RelationsPYQ May 25Question 4059 of 195
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K is the son of A's mother's sister. Q is daughter of D, who is the father of G and grandfather of A. P is the daughter of H, who is grandmother of K. D is husband of H and G is husband of L. How is P related to Q?

Options

AMother
BSister
CDaughter
DCousin
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Correct Answer

✅ Option b — Sister

All Options:

  • AMother
  • BSister
  • CDaughter
  • DCousin

Detailed Solution & Explanation

Let us trace the family tree step-by-step from the given relations:
1. **Identify the Grandparents (Top Generation)**:
- "D is husband of H." This means D\displaystyle D (male) and H\displaystyle H (female) are a married couple.
- "D is grandfather of A." and "H is grandmother of K." Thus, D\displaystyle D and H\displaystyle H represent the top generation.

2. **Identify the children of D and H (Middle Generation)**:
- "Q is daughter of D." Since D\displaystyle D is married to H\displaystyle H, Q\displaystyle Q is a daughter of D\displaystyle D and H\displaystyle H.
- "P is the daughter of H." Since D\displaystyle D is married to H\displaystyle H, P\displaystyle P is also a daughter of D\displaystyle D and H\displaystyle H.
- "D is the father of G." So G\displaystyle G is a son of D\displaystyle D and H\displaystyle H.
- Since Q\displaystyle Q and P\displaystyle P are both daughters of the same parents (D\displaystyle D and H\displaystyle H), P\displaystyle P and Q\displaystyle Q must be sisters.

3. **Verify consistency with A and K**:
- "K is the son of A's mother's sister." Let A\displaystyle A's mother be X\displaystyle X, and A\displaystyle A's mother's sister be Y\displaystyle Y (so Y\displaystyle Y is the mother of K\displaystyle K).
- Since D\displaystyle D and H\displaystyle H are grandparents of A\displaystyle A and K\displaystyle K, X\displaystyle X and Y\displaystyle Y must be daughters of D\displaystyle D and H\displaystyle H.
- "G is husband of L." G\displaystyle G (son of D\displaystyle D and H\displaystyle H) is married to L\displaystyle L.
All these relationships fit perfectly into a single family tree, where the children of D\displaystyle D and H\displaystyle H are Q,P,G,X\displaystyle Q, P, G, X, and Y\displaystyle Y.

4. **Determine the relation of P to Q**:
Since both P\displaystyle P and Q\displaystyle Q are daughters of D\displaystyle D and H\displaystyle H, P\displaystyle P is the sister of Q\displaystyle Q.

Hence, **Option B** is the correct answer.

About This Chapter: Blood Relations

Paper

Paper 3: Quantitative Aptitude

Weightage

5 Marks

Key Topics

Blood Relations

This chapter covers Blood Relations and is part of Paper 3: Quantitative Aptitude in the CA Foundation exam.

View Official ICAI Syllabus

Exam Strategy Tip

This topic carries 5 Marks weightage. Focus on understanding core concepts rather than memorizing.

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