If the profile

A true hypothesis can often bring the facts to light and the truth to the surface. If a person can make his thinking based on these assumptions in everything he does, then he can really live in NLP without getting into trouble, and his life will be more progressive and improved.

Series of problems

How to ask questions?

Difficulty: does does does does
  • There are two persons, a and B. Of whom a speaks lies and does not speak the truth; The other is to tell the truth and not lie. However, both of them answered other people’s questions by nodding and shaking their heads without speaking.
  • One day, A man was faced with two roads: A and B. One road led to the capital, and the other to A small village. Now there stood a and B before him, but he did not know whether they were A or B, and whether “nodding” meant “yes” or “no”.
  • Now he had to ask a question before he could decide which road led to the capital. So how do you ask this question?

“The answer”

To solve a problem, you need to create a logical paradox in order to detect the relevant problem.

Kinds of difficulties

There are too many possibilities, A and B are variables, the road is variable, and the answer result is also an unknown value, so we need to solve this problem. It is relatively easy to know A and B, but it is very tricky to know which one is going to the capital, A and B.

We can do that when both of them are at extremes, for example, both of them are nodding or shaking their heads.

  • When the road led to the capital, I asked a: if I asked B this road does not lead to the capital, what would he say? Because a only say false words, will shake his head, said b will say not to lead! Instead, I asked B: What would A say if I asked him that this road does not lead to the capital? Because b only said the truth, will shake his head, said that a will say no to!

  • When the road did not lead to the capital, I asked a: if I asked B this road does not lead to the capital, what would he say? Because a only falsehood, will nod, indicating that b will say to! Instead, I asked B: What would A say if I asked him that this road does not lead to the capital? Because b only tells the truth, so he will nod, indicating that A will say to!

So both shake their heads and go, and both nod and go the other way!

What are their professions?

Difficulty: does does does

Xiao Wang, Xiao Zhang and Xiao Zhao are good friends. One of them went into business, one was admitted to a key university and one joined the army.

In addition, they also knew the following conditions: Younger Zhao was older than the soldiers; The college students are younger than Xiao Zhang; Xiao Wang’s age is different from that of college students. Which of these three people is the businessman? Who is a college student? Who are the soldiers?

【 Problem analysis 】

From the following two conditions:

  • Xiao Zhang > college student
  • Xiao Wang <> College student

It can be seen that: Xiao Zhao is a college student; Whereas [xiao Zhao > soldier] and [Xiao Zhang > Xiao Zhao], it means that [Xiao Zhang <> soldier], it means that Xiao Zhang can only be a businessman and Xiao Wang can only be a soldier.

“The answer”

We can see that Xiao Zhang is a businessman, Xiao Wang is a soldier and Xiao Zhao is a college student.

Who got it right?

Difficulty: does does

A, B, C three people together to do homework, there is a math problem is more difficult, when the three of them to say their solution, a said: “I did wrong.” B said, “A did the right thing.” C said, “I made a mistake.” On the other side, Ding saw their answers and listened to their opinions and said, “One of you three got it right and one of you said it right.” Which one of them got it right?

【 Problem analysis 】

This problem needs to be analyzed together with two conditions: first, analyze from key conditions + screening conditions.

  • Key condition => Only one person got it right
  • Screening conditions => Only one person was right

(1) First analyze the logical queue conditions: B said: “A did the right thing.

If A is right, B is right, and the rest of the choices are wrong:

  • A said, “I made a mistake. 【X】 A is right

  • C said: “I did wrong. 【√】 C

So this is not true, so a is wrong, and B is wrong.

C: “I made a mistake.” If he is right, then everyone else is wrong, based on the above conditions [A says: “I did wrong”, B says: “A did right”], [A did wrong and A did right, this is a logical paradox].

“The answer”

So you can be sure that a is right, a is wrong, b is wrong and B is wrong, c is wrong => C is right.

[Color of shoes]

Difficulty: does does

  • Xiao Li bought a pair of beautiful shoes. None of her classmates have seen these shoes before.

    • “The shoes you bought won’t be red,” said Xiao Hong.

    • Small color said: “the shoes you bought are not yellow or black.

    • Xiaoling said, “The shoes you bought must be black.

  • All three were right in at least one way, and wrong in at least one way. Excuse me, what color are Xiao Li’s shoes?

【 答 案 】

This problem is relatively simple

If what xiao Hong said is right, then xiao CAI is right, then another person’s logic must be wrong, can not afford to hire, Xiao Ling must be wrong, then it can be sure that the black xiaocai said is certainly not, but yellow. Because xiaoling’s story was ruled out.

Who ate the fruit and snacks?

Zhao bought some fruit and snacks to visit a friend, but they were stolen by his sons, but she did not know which son. Ms Zhao was so angry that she questioned her four sons who had eaten the fruit and snacks.

The oldest said, “The second did.” The second said, “The fourth stole it.” The third said, “Anyway, I didn’t steal it.” The fourth said, “The second is lying.” Only one of the four sons was telling the truth. The other three were lying. So, who’s been stealing the fruit and snacks?

【 Problem analysis 】

The main reason for logical filtering is that only one person is telling the truth:

First of all, there is a strong correlation between the second brother and the fourth brother. Let’s start with the second brother. If the second brother is right, it means that the fourth brother is wrong, and it is the fourth brother who stole the food. What the eldest brother said is wrong, what the third brother said is right, this is not established.

So as you can see, the logical problem, above the third position,

If what the third brother said is wrong, then what the third brother ate,

  • Then what the boss said was wrong.
  • What the second brother said was also wrong.
  • But the fourth was right.
  • Third is also wrong based on the above conditions
“The answer”

We can conclude that this is true, so it’s the third person who stole the food.