Question

How is M related to N ?

Statement I. P, who has only two kids, M and N, is the mother-in-law of Q , who is sister-in-law of N.

Statement II. R, the sister-in-law of M, is the daughter-in-law of S, who has only two kids, M and N.

• A. If 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. If the data either in statement I alone or in statement II alone are sufficient to answer the question
• C. If the data given in both statements I and II together are not sufficient to answer the question
• D. If the data in both statements I and II together are necessary to answer the question.

Answer 1

The correct option is A

If 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

From I, we conclude that P is the mother of M and N, while Q is the daughter-in-law of P and sister-in-law of N. Thus, Q is M's wife and hence, M is N's brother. From II, we conclude that M and N are the children of S. Also, R is the daughter-in-law of S and sister-in-law of M. So, R is N's wife and thus, N is M's brother. Hence, M is either brother or sister of N.