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0 / 60 seg.
If A is the brother of B; B is the sister of C; and C is the father of D, how D is related to A?
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Clue
D IS EITHER THE NEPHEW OR NIECE OF A. A IS THE UNCLE OF D. D IS EITHER THE SON OR DAUGHTER OF C. A, B AND C ARE SIBLINGS AND A IS A MALE. C'S SON OR DAUGHTER HAS TO BE THE NEPHEW OR NIECE OF D
(C) DAUGHTER. A GUY, WHEN HE SAYS, "MY DAUGHTER'S MOTHER", HE IS REFERRING TO HIS WIFE. A LADY, WHEN SHE SAYS, "MY DAUGHTER'S MOTHER", SHE IS REFERRING TO HERSELF. BASED ON THE OPTIONS GIVEN, WE CAN SAFELY ASSUME THAT IT'S NOT A GUY - THERE IS NO OPTION FOR SON, FATHER, GRANDFATHER, GRANDSON, ETC. SO, WHEN A LADY SAYS, "MY DAUGHTER'S MOTHER", SHE IS ACTUALLY REFERRING TO HERSELF (OR 'ME'). AND, IF WE REPHRASE THE SENTENCE, IT BECOMES, "IF TERESA'S DAUGHTER IS ME, WHO AM I TO TERESA?"
B IS THE SISTER-IN-LAW OF E. A IS FATHER OF C AND C IS SISTER OF D. SO, A IS FATHER OF D. BUT D IS SON OF B. SO, B IS THE MOTHER OF D AND WIFE OF A. ALSO, E IS THE BROTHER OF A. SO, B IS THE SISTER-IN-LAW OF E
CHARLIE IS FEMALE AND IS OF THE OPPOSITE GENDER. IF JORDAN IS SAM'S ONLY DAUGHTER, THEN JORDAN CANNOT HAVE A SISTER AND STATEMENT 2 BECOMES FALSE. THEREFORE, JORDAN MUST BE SAM'S BROTHER AND A MALE. FROM STATEMENT 1, CHARLIE'S ONLY SON CANNOT BE SAM AS JORDAN IS SAM'S BROTHER, SO CHARLIE'S ONLY SON IS ALEX. FOR STATEMENT 2, WE KNOW THAT ALEX IS A MALE, SO ALEX CANNOT BE JORDAN'S SISTER. THEREFORE CHARLIE IS JORDAN'S SISTER. IT'S CLEAR THAT SAM, JORDAN AND CHARLIE ARE SIBLINGS AND ALEX MUST BE CHARLIE'S ONLY SON
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