Fifth person: You can see from the fourth person that the fifth person is telling the truth.
The first person: Then you can see that the first person is telling the truth.
Eighth person: Let's look at the eighth one again and say that at least six people are lying. If the eighth is telling the truth, then the first is telling the truth, and the fifth is telling the truth. Together, the three people are telling the truth, which contradicts the eighth, so the eighth is lying.
Sixth person: At this time, we can know that the fourth person lied and the eighth person lied, which means that at least two people lied, so the sixth person is telling the truth.
The second person: the fifth truth, the first truth and the sixth truth, so the second person said that at least one person was telling the truth, so the second person was telling the truth.
Seventh person: In the same way, telling lies can also be introduced.
Third person: Tell the truth in the same way.
2. What "logical reasoning" in life can exercise your logical reasoning ability, which is very helpful for your strong life. Things that may be used anytime and anywhere in life can make people do things logically.
Logical reasoning is carried out on the basis of grasping the inherent and inevitable relationship between things. Therefore, it has strong logical reasoning ability, can understand the habits of things from multiple angles, and comprehensively understand the various relationships between things inside and outside, things and other things.
Strong logical reasoning ability means strong logical thinking ability, and logical thinking ability means the ability to think correctly and reasonably. That is, the ability to observe, compare, analyze, synthesize, abstract, summarize, judge and reason things, and the ability to express one's thinking process accurately and methodically by using scientific logical methods.
It's completely different from thinking in images. Logical thinking ability is not only an essential ability to learn mathematics well, but also an essential ability to learn other disciplines and deal with daily life problems. & lt/ol & gt；
3. Ask some logical reasoning questions. A little girl, whose biological mother died very early, lives with her father in a villa with a garden outside London.
The little girl was afraid of loneliness, so she installed a mirror in her room. The image in the mirror can accompany her when she is lonely. The little girl looks in the mirror every day and sometimes wakes up at night.
At this time, a woman asked her father for property. But when she became her father's wife (that is, the girl's stepmother), she found that she could not inherit her father's property because her father wanted to give all his property to his daughter.
Her stepmother knows that if the little girl dies, all the property will naturally go to her. So she wanted to find a chance to kill the little girl.
Similarly, the little girl hates this woman. Want this woman to die.
It happened that she saw a superstitious book about "curse". She is convinced that "curse" can kill this woman she hates.
Coincidentally, she has another doll, which was given to her by her stepmother when she first entered this house. In this way, she treated the doll as a stepmother, tortured it in a very cruel way, and hung it on the window after torture.
My stepmother died suddenly three days before Easter, and the little girl died strangely on the thunderstorm night of Easter. Ask the little girl how she died and why. "。
4. Ask for a classic logical reasoning. In the history of logic, there are many classic logical reasoning. According to your request, here is only one example.
In the Middle Ages, theologians once declared that God was incompetent. In this regard, some people questioned at that time: Can God make a stone that he can't even lift himself? Faced with such a problem, theologians are caught in a dilemma.
Because this challenge is actually the following dilemma: if God can make a stone that he can't lift himself, then God is not omnipotent (because he can't lift the stone after all); If God can't create a stone that he can't lift himself, then God is not omnipotent (because he can't create a stone); God can or can't create such stones; In a word, God is not omnipotent. This is a simple construction (affirmative) formula of dilemma reasoning, and its structural form is: if P, then R; If Q, then rp or Q. Therefore, R can also be symbolized as (P → R) ∧ (Q → R) ∧ (P ∨ Q) → R → R.