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X is the brother of Y. Z is the mother of X. W is the father of Z. How is W related to Y?
Grandfather
Father
Uncle
Brother
Grandfather
Visualize the generation gap: X and Y are siblings (same generation), Z is their mother (+1 generation), W is the father of Z (+2 generations). Father's father or Mother's father is always the Grandfather.
Visualize the generation gap: X and Y are siblings (same generation), Z is their mother (+1 generation), W is the father of Z (+2 generations). Father's father or Mother's father is always the Grandfather.
Establish the Siblings
Since X is the brother of Y, X and Y share the same parents. X is male. Y's gender is currently unknown, but that does not affect the relationship with their ancestors.
Establish the Parental Generation
Z is the mother of X. Since X and Y are siblings, Z is also the mother of Y.
Establish the Grandparental Generation
W is the father of Z. Since Z is the mother of Y, the father of the mother (W) is the Maternal Grandfather of Y.
B: Father is incorrect because W is two generations above Y. C: Uncle is incorrect because W is the parent of the parent. D: Brother is incorrect as W is two generations older than Y.
A is correct because W is the father of Y's mother, which identifies him as Y's maternal grandfather.
In blood relation questions, always focus on the gender of the subject and the bridging person (the link between the two generations) to quickly identify the correct relationship category.