Question How is M related to N Statements P who has only two kids M and N is the mother in law of Q ...........

Logical Reasoning(Master ) Data Sufficiency

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Question: How is M related to N?

Statements:

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

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

I alone is sufficient while II alone is not sufficient

II alone is sufficient while I alone is not sufficient

Either I or II is sufficient

Neither I nor II is sufficient

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Explanation:

Answer: Option A
Explanation:
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.