You are given a question and two statements. Identify which of the statements is/are necessary/sufficient to answer the question.
Question:
How is Y related to T, in a 4 member family of X,Y,Z and T.
Statements:
1. Z is the daughter of X.
2. Y is the only son of T, who has 2 children. X is the mother of Z.

Question

Question

Answer 1

1. Z is the daughter of X.

We cannot say how Y is related to T using this statement.

2. Y is the only son of T, who has 2 children. X is the mother of Z.

We can easily say that Y is the son of T using this statement alone.

Hence, ‘2 alone is sufficient while 1 alone is not sufficient’ is the correct answer.