Data Sufficiency — Number of M’s children
Question: How many children does M have?
Statements:
I. H is the only daughter of X, who is the wife of M.
II. K and J are brothers of M.
Decide which statement(s) determine the number of M's children.
Difficulty: Easy
Correct Answer: Neither I nor II is sufficient
Explanation:
Assessment
Statement I: H is the only daughter of M's wife (X). This implies M has exactly one daughter, but he may have zero, one, or more sons. The total number of children is unknown.
Statement II: Tells about M's siblings (K and J), not M's children. Irrelevant to the question.
CombinedEven together, we only know there is one daughter; the count of sons (if any) is undetermined.
Final Sufficiency ChoiceNeither I nor II is sufficient.
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