谁在说谎?张三、李四、王五三人,张三说李四在说谎,李四说王五在说谎,王五说张三和李四都在说谎。请问:张三、李四、王五谁在说谎?谁说的是真话?分析:这个问题看起来复杂,但若把它变为数学问题,则清晰多了。设张三为A、李四为B、王五为C ,说真话为1,说谎话为0。( 1)若A =1,即张 Who is lying? Zhang San, Li Si, and the king of the three three, Zhang San said that Li Si was lying. Li Si said that Wang Wu was lying. Wang Wu said that both Zhang San and Li Si were lying. I would like to ask: Who are you telling, Zhang San, Li Si and Wang Wu? Who is telling the truth? Analysis: This problem seems complicated, but if you turn it into a mathematical problem, it will be much clearer. Let Zhang San be A, Li Si be B, and Wang Wu be C, tell the truth as 1, and lie as 0. (1) If A =1, namely Zhang