This is called out in the article:
>Note: this question was originally set in a maths exam, so the answer assumes some basic assumptions about formal logic. A liar is someone who only says false statements.
Yeah, my comment was just a suggestion that that wording be imported into the question, rather than living in a clarification.
Yeah, my comment was just a suggestion that that wording be imported into the question, rather than living in a clarification.