1.

How is M related to N? I. P, who has only two kids, M and N, is the mother-in-law of Q, who is sister-in-law of N. II. R, the sister-in-law of M, is the daughter in-law of S, who has only two kids, M and N.

Answer»

<P>the data in STATEMENT I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question,
the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question,
the data either in statement I alone or in statement II alone are sufficient to answer the question,
the data given in both STATEMENTS I and II together are not sufficient to answer the question,

Solution :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.


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