easy
Pointing to a man, a woman said, "His mother is the only daughter of my mother." How is the woman related to the man?
Common Wrong Answers
“Sister”
If the woman is the only daughter of her mother, she cannot also be the man's sister, as that would imply there is another daughter.
“Aunt”
For the woman to be the man's aunt, she would have to be a sibling of one of his parents, which contradicts the statement that she is the only daughter of her mother.
“Cousin”
Cousins are typically children of siblings; since the woman is the only daughter of her mother, she cannot also be the man's cousin.