A is B's brother. C is A's mother. D is C's father. How is B related to D?

GrandsonCorrect answerYour answerGranddaughterCorrect answerYour answerGrandchildCorrect answerYour answerSonCorrect answerYour answer

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CorrectNot quiteAnswer C

Correct answer: C

A and B are siblings, so C, who is A's mother, is B's mother too.
D is C's father, so D is the grandfather of C's children.
B is therefore D's grandchild.
Nothing in the question tells us whether B is male or female, so the answer must not assume one.

Worth noting

"A is B's brother" fixes A's gender, not B's. Grandson and granddaughter each guess, and a guess is wrong half the time.

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