Question

A is the brother of B. A is the brother of C. To determine the relation between B and C, what minimum information is necessary?

• A. Only (i)
• B. Only (ii)
• C. Either (i) or (ii)
• D. Both (i) and (ii)

Hint:

When analyzing relationships, knowing the gender of at least one individual is often crucial to determining the exact relation.

Answer 1

The Correct Option is D

It is established that A is the sibling of B and C. To ascertain the relationship between B and C, further information is required. Step 1: Assessment of Information (i) - Gender of C Knowing C's gender would enable the determination of whether B and C are brothers or siblings.
Step 2: Assessment of Information (ii) - Gender of B Similarly, knowing B's gender would allow for the determination of whether B and C are brothers or siblings.
Step 3: Final Determination Without knowing C's gender, it is impossible to ascertain if B is the sister or brother of C. Conversely, without knowing B's gender, it is impossible to ascertain if C is the sister or brother of B. Therefore, **both (i) and (ii) are requisite** for establishing the relationship. % Correct Answer Correct Answer: (d) Both (i) and (ii)