The following stories of mathematical logic may help you better understand mathematics and logic. And the ability of reasoning process to get answers is logical ability.
1. How much does this stone weigh?
Four children started talking when they saw a stone rolling down the hillside.
"I think this stone weighs 17 kg," said the first child.
"I said it weighs 26 kilograms," said the second child disapprovingly.
"I think it has 2 1 kg," said the third child.
"You are all wrong. I think its correct weight is 20 kilograms, "argued the fourth child.
The four of them were red-faced, and neither of them would accept the other. Finally, they weighed the stone, but no one guessed correctly. One of them guessed that the weight was 2 kilograms different from the correct weight of the stone, and the other two guessed that the weight was the same as the correct weight of the stone. Of course, the difference referred to here is absolute and has nothing to do with symbols. How much does this stone weigh?
click the mouse
Click on the mouse and the game begins now! The contestants are Ralph, Willie and Paul.
Ralph can hit the mouse 10 times in 10 second; Willie can hit the mouse 20 times in 20 seconds; Paul can click the mouse five times in five seconds. The time spent by each person above is calculated as follows; From the first blow to the end of the last blow.
Did they draw a picture? If not, who finished 40 mouse clicks first?
Seize the opportunity to make a fortune
Once upon a time, there were two neighboring countries, A and B, and they had a good relationship. They not only have frequent trade with each other, but also have a common currency and the same exchange rate. In other words, the 100 yuan of country A is equal to the 100 yuan of country B, but the relationship between the two countries broke down because of an incident. Although the trade continued, the kings of the two countries announced to each other that 100 yuan of each other's currency could only be exchanged for 90 yuan, the national currency. There was a wise man who only had 100 yuan notes from country A, but he took the opportunity to make a fortune. Please think about it, how did this smart man get rich from it?
4. Daughter's fault
Father called his daughter and asked her to buy some daily necessities for herself, and told her that the money was in an envelope on the desk. My daughter found the envelope and saw that it said 98. She thought there was 98 yuan in the envelope, so she took out the money and put it in her schoolbag.
In the shop, she bought something from 90 yuan, only to find that she didn't leave 8 yuan, but gave it to 4 yuan.
When she got home, she told her father about it, suspecting that his father had ordered the money wrong. The father smiled and said that he didn't count wrong, but his daughter was wrong.
Q: What happened to my daughter?
5. Unreasonable arrangements
Mr. S was resting at home when he received an appointment call from a stranger. The other party really wants to visit him at his home next Friday. But Mr. S didn't want to meet the stranger, so he said quickly, "I'm busy next Friday." There will be a meeting in the morning, a student's wedding at 1 in the afternoon, a friend's child's funeral at 4: 00, and then my uncle's 70th birthday. So I really didn't have time to receive your visit that day. "
Please read the questions carefully Mr. s's words are not credible. Where is it?
family feast
At a family dinner, after the host made a toast, they began to clink glasses to celebrate each other. According to statistics, at the banquet, everyone clinked glasses with each other and the table clinked glasses 45 times. According to these circumstances, can you know how many people attended the family dinner?
068. Fair kindergarten teachers
Today, the kindergarten teacher gave 10 children an average of 2 Jin of rock candy, but she only had a balance, a weight of 500g and a small hammer of 900g, and nothing else. Please think about it, how to help teachers distribute these rock candy evenly?
069. Intelligent command
The chorus performance is about to begin, but one member is ill. The commander lined up the team. If there are 10 people in a row, then there are 1 people in a row. If there are 12 people in one row, one row is still short of 1 people, and if there are 15 people in one row, one row is still short of 1 people. How many people are there in chorus one?
There are many ways to improve it, such as reading detective stories, doing more brain teasers, thinking as much as possible when considering problems, inferring from both sides and so on. It's right to use your head more ~ ~ I suggest you go online and look at some mathematical logic topics to do. If you do more, you will find that your ability has improved ~ ~