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 Twins (Posted on 2009-01-07)
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 No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
 Answer Comment 6 of 6 |
`The answer is as follows:Liar(s) ..... Bert and Dave`
`Knight(s) ... Carl`
`Knave(s)....  Alex`
`Bert and Dave are twins.`

 Posted by K Sengupta on 2009-01-25 16:37:48

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