Question

Choose the statement/statements required to answer the question by selecting the right option.
Question: Is Alex the son of David?
Statements:
I. Alex is the father of Tony.
II. David is the grandfather of Tony.

• A. Statement I alone is sufficient
• B. Statement II alone is sufficient
• C. Both statements I and II together are sufficient
• D. Neither statement I nor statement II are sufficient

Answer 1

The Correct Option is D

Step 1: Analyze Statement I: 

• It states that Alex is the father of Tony.
• However, this does not provide any information about Alex's parents or whether David is his father.

Conclusion: Statement I alone is insufficient.

Step 2: Analyze Statement II:

• It states that David is the grandfather of Tony.
• This only confirms that David is the father of one of Tony’s parents, but we do not know which one.
• We do not have enough information to confirm if Alex is David's son.

Conclusion: Statement II alone is insufficient.

Step 3: Combine both statements:

• From Statement I, we know Alex is Tony's father.
• From Statement II, we know David is Tony's grandfather, but we do not know whether David is the father of Alex or the father of Tony’s mother.
• There is ambiguity, so we cannot conclude that Alex is David's son.

Final Conclusion: Neither statement alone nor both together are sufficient to answer the question.