Two kids are liars, three can only say the truth. Jane: " Julia is only a liar, if John is telling the truth." Julia: "If Joey d
oesn’t lie, then either Jane or John do." Joey: " Jack lies, as does Jane or Julia." John: "If Julia is telling the truth, then Jane or Joey do as well." Jack: "If you round up Jane, Joey and John, you will have at least one liar." The compulsive liars are_____
It says jack lies as an absolute and when jack speaks he says "if you round up jane joey and john one is a liar" which means none of them are liars. which gives you the 3 who tell the truth and leaves jack and julia as the liars.
I reasoned through it by taking a statement that definitively said one person was lying or telling the truth and checked to see if it made sense with the rest assuming they were telling the truth.
I started with Joey (who said jack was a liar). That meant I knew 1 liar and 1 telling the truth. To continue, I looked at Jack's statement and concluded that Jane and John also weren't liars (since that would've make him truthful).
I now knew 1 liar and 3 that told the truth. That left Julia as the second compulsive liar.
