Question

A is B’s sister. C is B’s father. D is C’s mother. How is D related to A ?

• A. Uncle
• B. Sister
• C. Grandfather
• D. Grandmother

Hint:

Always draw the tree generation-by-generation.
Gen 1 (top): D (Female)
Gen 2 (middle): C (Male)
Gen 3 (bottom): A (Female) -- B (Gender unknown)
Since D is female and two generations above A, she must be the Grandmother. This avoids any gender confusion!

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
This question belongs to the topic of Blood Relations.
We are given a set of relations between four individuals: A, B, C, and D.
Our task is to decipher the exact genealogical relationship between D and A.

Step 2: Key Formula or Approach:
The best approach to solve blood relation puzzles is to draw a generation-wise family tree.
We will represent:
- Female members with a minus symbol \((-)\).
- Male members with a plus symbol \((+)\).
- Siblings in the same horizontal row.
- Parents in the row above their children.

Step 3: Detailed Explanation:

• Let us map each sentence into the family tree:

• Statement 1: "A is B's sister"
- This establishes that A is female, so we denote her as \(A^-\).
- Since she is B's sister, A and B are in the same generation.
- Note that the gender of B is not mentioned yet.

• Statement 2: "C is B's father"
- This establishes that C is male, so we denote him as \(C^+\).
- C belongs to the generation immediately above B.
- Since A is B's sister, C must also be A's father.

• Statement 3: "D is C's mother"
- This establishes that D is female, so we denote her as \(D^-\).
- D belongs to the generation immediately above C.

• Now, let us combine these connections to find how D is related to A:
- C is the father of A.
- D is the mother of C.
- Therefore, D is the mother of A's father, which legally and genealogically means D is the paternal grandmother of A.
- Looking at the options, "Grandmother" is given in Option (D).


Step 4: Final Answer:
D is the Grandmother of A, which corresponds to Option (D).