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Question

Difficulty: EasyBlood Relations

Read the given relationship statements carefully: 'X is the child of Y, and Y is the mother of Z.' If W is the brother of X, which of the following best describes the relationship of Z to W?

  1. Brother or Sister (Cannot be determined uniquely without knowing Z's gender)Answer
  2. B
    Brother
  3. C
    Sister
  4. D
    Uncle

Answer

Brother or Sister (Cannot be determined uniquely without knowing Z's gender)
Y is the mother of X and Z. Because W is the brother of X, all three are siblings sharing Y as their mother. However, since no relational term specifies whether Z is male or female, Z can be either a brother or a sister to W.

Step-by-Step Solution

1
Analyze parent-child relationships
Y is the common parent of X, Z, and W
Y is the mother of X and Z. Since W is the brother of X, W is also a child of Y.
2
Determine generation and sibling group
X, Z, and W are all siblings
All three share the same mother Y, putting them in the same generation.
3
Evaluate gender of the target person
Gender of Z is unspecified
The term 'child' does not define gender. Without explicit information, Z may be male or female.

Key Concept

Gender ambiguity in family trees
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Topics

Blood Relations

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