Classic logical thinking training questions 1. There are three strange villages on an island. People in a village never tell lies, and people in b village never tell the truth. The people in village C told a lie and a truth, and the first sentence was true or false. One day, Zhang San, Li Si and Wang Wu were sightseeing on the island and met two tour guides. They all say the other one belongs to Bingcun.
The two tour guides acted as judges to see who threw the stone far away, Zhang San, Li Si and Wang Wu, and gave different conclusions: One said? Zhang San comes first, Li Si comes second, and Wang Wu comes third? The other said:? Wang Wu comes first, Zhang San comes second and Li Si comes third. So which village are the two tour guides from? What is the ranking of the three? (Write down the specific reasoning process)
Second, there are two people, Zhang San and Li Si. Zhang San only tells lies, not the truth; Li Si only tells the truth, not lies. They just nodded and shook their heads when answering questions, not talking. One day, a scholar faced two roads, X and Y, one leading to the capital and the other to the town. In front of him stood one of Zhang San and Li Si, but he didn't know whether it was Zhang San or Li Si. I don't know? Nod? Is this a sign? what's up , or say? No? . He only needs to ask one question to determine which road leads to the capital.
How to ask the answer to the classic logical thinking training questions? (Write down the specific reasoning process) The first question; The composition of two tour guides can only be: Village A+Village A; Village b+village b; Bingcun+Bingcun; Village a+village b; Village a+village c; Village b+village c; Six structures
1. It is easy to exclude: Jia Cun+Jia Cun; Village a+village b; 1 ST village+bing village
2. If both of them are from Village B, and what they say is a lie, then the three people rank: Li, Wang and Zhang;
3. If both of them are from C Village, the first sentence they said is true and the next sentence is false, then the ranking of the three people is: Li, Wang and Zhang; 4. If it is the structure of village A+village C, it is not the structure of village A+village C. Because you lied the first time, you should tell the truth the second time, and A always tells the truth. Therefore, it is easy to determine the rankings of three tour guides: Li, Wang and Zhang. The two tour guides may come from Village C or Village B..
If the real ranking of the three people is Li first, Wang second and Zhang third, the two tour guides can only judge that they may come from village C or village B; If the real ranking doesn't match the inference, the two tour guides are from Bingcun. The second question: very simple. He just needs to stand on any road and ask one of them: What would he say if I asked him (another person) that this road doesn't lead to the capital? If two people shake their heads, they will go this way; If two people nod, they will go the other way.
6 logical thinking training questions recommended training logical thinking training questions 1. Which number is the smallest?
There are four numbers A, B, C and D, which have the following relations: the sum of A and B is greater than the sum of C and D, the sum of A and D is greater than the sum of B and C, and the sum of B and D is greater than the sum of A and C. Can you know which of these four numbers is the smallest from these conditions?
Training logical thinking training problem 2. Do the problem.
The teacher assigned two homework questions to 60 students in the class, of which 40 were right in the first question, 365,438+0 were right in the second question, and 4 were wrong in both questions. So, can you figure out the number of people who answered both questions correctly?
Training logical thinking training problem 3. solve problems
My brother asked his sister to help him solve a math problem. Multiply a two-digit number by five to get a three-digit number, and the sum of the units of the three-digit number and the hundred-digit number is exactly equal to the number in the tenth place. After reading it, my sister was very anxious and felt that she could not get a clue. Can you help her get the answer to this question?
Training logical thinking training problem 4. The color of the scarf.
A group of people went for an outing together. Some of them are wearing blue headscarves, others are wearing yellow headscarves. In the eyes of people wearing blue headscarves, there are as many blue headscarves as there are yellow headscarves, while in the eyes of people wearing yellow headscarves, there are twice as many blue headscarves as yellow headscarves. So how many people wear blue headscarves and how many people wear yellow headscarves?
Training logical thinking training problem 5. Divide the jelly.
Xiaohong's mother bought a lot of jelly. There are 48 jellies. Xiaohong's mother said to Xiaohong: If you can divide these jellies into four parts, so that the first part adds 3, the second part subtracts 3, the third part multiplies 3 and the fourth part divides 3, and the results are consistent, then you can eat these jellies. Xiaohong thought for a long time and finally came up with this problem. Do you know how to divide the smart ones?
Training logical thinking training problem 6. Buy books.
Xiaohong and Xiao Li go to Xinhua Bookstore to buy books. They both want to buy the book Comprehensive Exercise, but they don't have enough money. Xiaohong is short of 4.9 yuan and Xiaoli is short of 0. 1 yuan. They bought a book with their money, but the money is still not enough. So, what's the price of this book?
The answer to the training question of training logical thinking is 1. C ( 1)A，B >； c、D； (2)A、D & gtb、C； (3)B, D> A, C. A >: C from (1)+(2), B > from (1)+(3); C, d > is known from (2)+(3); So, c is the smallest.
2. According to the stem, we assume that two digits are AB and three digits are CDE, so AB*5=CDE.
Step 1: It is known that CDE is divisible by 5, and it can be concluded that each bit is 0 or 5.
Step 2: If the last digit E=0, C=D because E+C = D.
Step 3: According to the meaning of the question, the quotient of CDE/5 is two digits, so the hundred digits are less than 5.
Step 4: Since C=D was obtained in the previous step, when C = 1, 2,3,4, D = 1, 2,3,4, CDE =1/kloc-0,220,330,440.
Step 5: If E=5, when C = 1, 2, 3, 4, D = 6, 7, 8, 9, CDE = 165, 275, 385, 495.
So there should be eight such numbers in this question.
There are 15 people who answered both questions correctly. 40+3 1(604)= 15。
4. Because people can't see the headscarf on his head, it seems that there are as many people wearing blue headscarfs, that is to say, there is one more blue headscarf than yellow headscarf. If there are x yellow headscarfs, there are X+ 1 blue headscarf. And everyone who wears a yellow headscarf thinks that the blue headscarf is twice as big as the yellow headscarf. In other words, 2(X 1)=X+ 1, and the solution is X=3. So there are four blue headscarves and three yellow headscarves.
5. The four copies are 12, 6, 27 and 3 respectively. Let these four jellies all be X, then the first one is X+3, the second one is X3, the third one is 3X, and the fourth one is X/3, and the total number is 48, so X=9. So we can know how much each one is.
6. The price of this book is 4.9 yuan. Xiaohong has no money in her pocket, and Xiaoli has 4.8 yuan in her pocket.
Training problems related to logical thinking;
1. 500 questions of logical thinking training
2. Classic logical thinking training questions (25 questions with answers)
3. Logical thinking problem
4. Intellectual training of logical thinking.
5. Highlights of cultivating logical thinking ability
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