Question:medium

A man introduces a girl as the daughter of the sister of his father. How the girl is related to the man

Updated On: Jul 15, 2026
  • Daughter
  • Niece
  • Grand daughter
  • Cousin
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The Correct Option is D

Approach Solution - 1

Working forward from the description: the man's father has a sister, so she is his paternal aunt. The girl introduced is that aunt's daughter. Family terminology defines the child of one's parent's sibling as one's cousin, so working forward from father, to father's sister, to her daughter, lands directly on cousin without needing to test each label separately.

Checking this against the choices confirms it: the girl cannot be a daughter, since she isn't the man's own child, cannot be a niece, since that title applies to a sibling's child rather than an aunt's child, and cannot be a grand daughter, since that would need the man's own child to have a daughter.

Therefore, the correct answer is Cousin.

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Approach Solution -2

Another way to pin down the relationship is to identify the nearest ancestor the man and the girl have in common, and then check whether they descend through the same parent or different ones. The man's father and the girl's mother, the father's sister, are themselves siblings, so their shared parent, the man's grandfather, is the nearest common ancestor of the man and the girl. The man descends through his father's line, while the girl descends through her mother's, the aunt's, line, two different parent-lines meeting at the same grandparent.

  1. Daughter: this label needs the man himself to be the girl's parent, with no shared grandparent required at all, which is not the case here.
  2. Niece: this label needs the girl's parent to be the man's own sibling, but the girl's parent, her mother, is the man's father's sibling, one generation removed from fitting the niece test.
  3. Grand daughter: this label needs the nearest common ancestor to be the man himself, two generations down, rather than a shared grandparent one generation up.
  4. Cousin: this label applies exactly when two people share a grandparent but come down through two different parent-lines, exactly the man and the girl's situation here.

Therefore, the correct answer is Cousin.

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