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Question:  Consider the following Statements.
Albert:- Dave did it.
Dave:- Tony did it.
Gug:- I did not do it.
Tony:- Dave lied when he said that I did it.
If any one out of all above statement is true,who did it?(4 marks)
please tell me how to approach this type of problem



January 01, 2007 15:24:48 #2
 shashank mankotia   Member Since: Visitor    Total Comments: N/A 
RE: Consider the following Statements. Albert:- ...
 

i think gug did it because

one one of them is lying

now if GUG is lying (meaning someone else is telling the truth) then that means that he did it

if gug is telling the truth then that wud mean

     dave says tony did it...(but he's lying) meaning tony did not do it

     tony says that dave is lying when he says that tony did it (since he's lying too) meaning that dave is telling the truth meaning that tony did it

since this is a contradiction... this is not possible

any suggestions??
     

 

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