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Verbal Reasoning - Data Sufficiency - Discussion

Discussion Forum : Data Sufficiency - Section 2 (Q.No. 14)
Data Sufficiency
Directions to Solve

In each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and

Give answer

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

14.

Question: How is M related to N?

Statements:

  1. P, who has only two kids, M and N, is the mother-in-law of Q, who is sister-in-law of N.
  2. 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
Both I and II are sufficient
Answer: Option
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.

Discussion:
6 comments Page 1 of 1.
Ankit said:   1 decade ago
Option A is right just read the question carefully.

Question is how M is related to N so either N is male or female (which we don't know) M will be always brother to N (we know the gender of M) and both are the kids of P.

From II we know the gender of N but we don't know the gender of M so we can't say how is M related to N.
Afroz said:   1 decade ago
The option should be E. Because without combining the two statment it is not possible to identify the gender (male, female) of others (M, N).
Pradeep said:   1 decade ago
Option should be E. Since from A we get only M is Male but we don't know that gender of N. Only from option 2 we get the gender of N.
Trishla said:   8 years ago
Gender is unknown but we can say that M, N are siblings. Then why not option C?
Raji said:   1 decade ago
How do we know the gender of M from I?

M can be sister-in-law of Q also know?
Kumud Singh said:   7 years ago
Agreed @Ankit.
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