How is X related to Y ? Statements : I. Y says, "I have only one brother". II.…
2024
How is X related to Y ?
Statements :
I. Y says, "I have only one brother".
II. X says, "I have only one sister".
- A.
The data in statement I alone is sufficient to answer the question, while the data in statement II alone is not sufficient to answer the question
- B.
The data in statement II alone is sufficient to answer the question, while the data in statement I alone is not sufficient to answer the question
- C.
If the data in either statement I alone or in statement II alone is sufficient to answer the question
- D.
If the data in both the statements I and II together is not sufficient to answer the question
Show answer & explanation
Correct answer: D
In a blood-relation Data Sufficiency question, a statement is sufficient only when it fixes a definite, exclusive relationship between the two people actually named in the question; a fact about only one person's family, with no reference to the other person, cannot do this.
Statement I only describes Y's own sibling (Y has one brother) and never mentions X. Statement II only describes X's own sibling (X has one sister) and never mentions Y. Reading the two together adds no shared reference point, no common parent, no direct statement linking X and Y, so combining them still gives two independent, unconnected family facts rather than a relationship between X and Y.
Testing it directly: even if X happened to be the brother Y refers to, the statements give no way to confirm or rule this out, since neither one ties the sibling mentioned back to the other named person.
So the data in both statements I and II together is not sufficient to determine how X is related to Y.