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Twins (Posted on 2009-01-07) Difficulty: 2 of 5
Alex, Bert, Carl, and Dave are all brothers, with two of them being twins. At least one of them is a knight and makes all true statements. At least one of them is a liar and makes all false statements. And at least one of them is a knave and makes alternating true and false statements. The two which are the same type are the twins. From the statements below, determine who the twins are.

Alex:
1) Bert is one of the twins.
2) Carl is a liar.

Bert:
1) Carl is one of the twins.
2) Alex is a knight.

Carl:
1) I am not one of the twins.

See The Solution Submitted by Brian Smith    
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  Subject Author Date
AnswerK Sengupta2009-01-25 16:37:48
Answer by eliminationrod hines2009-01-07 19:25:40
Solutionelementofsurprize2009-01-07 18:27:38
SolutionSolution with explanationGamer2009-01-07 18:23:57
Solutioncomputer solutionCharlie2009-01-07 16:32:03
SolutionSolutionDej Mar2009-01-07 15:46:50
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