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Different Gender (Posted on 2013-08-21) Difficulty: 2 of 5
Val, Lynn, and Sam are related to each other, but not incestuously (i.e. siblings do not create a child).
  1. Among the three are Valís father, Lynnís only daughter, and Samís sibling.
  2. Samís sibling is neither Valís father, nor Lynnís daughter.
Which one is a different gender from the other two?

See The Solution Submitted by K Sengupta    
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analytical solution | Comment 1 of 2

Either Lynn or Sam is Val's father.

1) Lynn is Val's father
Since Sam's sibling is not Val's father it can not be Lynn, thus Sam's sibling is Val.  Since Sam's sibling is not Lynn's daughter then that means Val must be a male.  Since Lynn must have a daughter, that makes Sam a female.  Finally, since Lynn is a father, that makes Lynn a male.  Thus the odd one out is Sam.

2) Sam is Val's father
This makes Sam a male.  Thus Lynn's daughter must be Val.  However, that does not leave a possible sibling for Sam without creating an incestuous relation.

Thus the odd one out must be Sam as we have:
Val: male, daughter of Lynn and brother of Sam
Lynn: male, father of Val and Sam
Sam: female, daughter of Lynn and sister of Val


  Posted by Daniel on 2013-08-21 10:07:25
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