Question

How many daughters does K have?
Statement I. L and N are sisters of M.
Statement II. N's mother is K who has only one son.

• A. If the data in statement I alone are sufficient to answer the question,while the data in statement II alone 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 all 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 even in both statements I and II together are not sufficient to answer the question;
• E. If the data in both statements I and II together are necessary to answer the question.

Answer 1

Answer: (E)

If the data in both statements I and II together are necessary to answer the question.

From Statement I,

L and N are sisters of M, which means that either M is a boy or a girl who has two sisters.

Nothing can be said about their relationship with K.

From Statement II,

N's mother is K, who has only one son. Since, L and N are sisters, then the only option left is that M is the son.

If we combine both the statements, we can conclude that K is the mother of three children, among which L and N are daughters and M is the son.

Hence, K has 2 daughters.

Option E is correct.