Chapter 63: Easy problem solving
Ying Zheng and others immediately came to their senses, especially Ying Zheng, who immediately looked at the answers in their hands.
"There are 12 birds on the first tree, 9 birds on the second tree, and 3 birds on the third tree. Sir, is Zhao Su's answer correct?" Ying Zheng asked.
Qin An nodded and said: "That's very correct. But it takes too long. If it takes such a long time to answer tomorrow's exam, then you will definitely not pass the exam, let alone be excellent, or even get full marks.
And I looked at the paper you used to make the draft, and I found that you used the stupidest method. You drew three trees and dealt with them one by one. What a waste of time? "
"Sir, is there an easier way?" Fusu asked.
Young Master Gao also said: "Mr. Dissatisfied, this is how I solve the problem. I really can't think of a better way."
Li Xiao and Meng Chongde looked at each other, and finally said at the same time: "The same is true for us."
Qin An sighed and said: "I knew it would be like this, you think you only have a rough understanding of it, but you can't apply it flexibly.
Isn’t this question like, wait for the 4 birds on the first tree to fly to the second tree, then the 5 birds on the second tree fly to the third tree, and then the birds on the three trees The quantity is the same.
The key to the problem is that they are the same, the quantity is the same. Then it means there is only one number.
So it is easy to get a quantity, 8.
The rest of the third lesson is that 5 birds flew over the second tree to become 8. So as long as 8 minus 5, we can easily know that there are 3 birds in the third tree.
So now we need to add these 5 birds to the second tree. 8 plus 5 equals 13. The reason why there are 13 birds on the second tree is because 4 birds flew on the first tree. Come.
So the second tree is 13 minus 4 equals 9, which is 9 birds. The first tree is 8 plus 4 equals 12, 12 birds.
Answer: Originally there were 12 birds on the first tree, 9 birds on the second tree, and 3 birds on the third tree. "
When everyone heard this, they couldn't help but marvel in their hearts. How could the problem be solved so easily?
Fusu was even more excited.
"Wonderful." Ying Zheng couldn't help but say, "Sir's problem-solving method is really wonderful. In this way, this difficult problem can be solved easily."
Li Si admired: "It turns out that problems can be solved in this way. This is eye-opening."
Meng Tian sighed and said: "It's a pity that the question you asked is about little birds. It would be great if you could use military affairs as the question."
"Military question? Isn't that bad? Military questions are never included in school textbooks. The profession of a soldier is sacred and inviolable.
Soldiers have the responsibility to defend the country and the country. They can sacrifice their lives and blood for the sake of the people and stewards, so the military is not used as a theme throughout the country.
If there is one, it is only in military schools, and they become soldiers after graduation. "Qin An explained.
"Military school?" Meng Tian's heart moved.
"Yes, it specializes in training soldiers." Qin An said, "Ordinary soldiers can retire after serving as soldiers for three years. Soldiers who graduate from military schools are the backbone of the army, so they will retire later."
"What, you have to serve as a soldier for three years and then retire?" Meng Tian was shocked, "Sir, isn't it true that soldiers who are older are more powerful?"
"Yes, the older the soldiers, the stronger their combat effectiveness. But our country has become a powerful country in the world, whether it is economically or militarily, and even the third largest country in the world.
Therefore, everyone in the world dares to wage war against our country, and we have been at peace for more than 70 years.
Moreover, fighting now is no longer the ancient time of cutting each other with knives, but also with muskets. No matter how high your martial arts skills are, you can't beat a bullet.
The most important thing is that there is now a training method in the army. They train every day to train the soldiers' spirit and spirit very well. They also follow orders and prohibitions, so that they can 100% kill the enemy heroically on the battlefield. "Qin An explained.
"The way soldiers are trained, isn't that the way to train soldiers? Sir, do you understand?" Meng Tian asked. He is a soldier and the leader of the Meng Family Army. He has always had a hard time finding ways to train soldiers.
Although he has occupied the six countries and collected their military training methods, there are only a few that can be used.
There are many art of war, but they can only be used on the battlefield and cannot be used in military training.
So how could he not be tempted when he heard that there was a way to train soldiers in later generations?
Qin An shook his head and said: "I don't understand formal military training. I have never been a soldier. I only know simple training. Anyone who has read a book knows that military training is required after entering junior high school.
Lao Meng, if you want it, I'll give it to you. It's just the simplest physical training. "
"I need it, thank you sir." Meng Tian said excitedly.
Ying Zheng and Meng Chongde were also very happy. One was happy that Da Qin would have more tiger and wolf troops, the other was happy that his father could get what he wanted, and he was happy that the Meng family army had added strength.
"Let me tidy it up tonight and give it to you tomorrow. Let's eat first. This mutton won't taste good when it's cold." Qin An said.
"Okay. Thank you sir." Meng Tian responded.
Li Si and others did not dare to move for a while. The First Emperor had not sat down yet, so how could they dare to sit down?
Ying Zheng hurriedly greeted everyone and said, "Everyone, please sit down. You don't need so much etiquette here, sir. Just be casual."
"promise."
Then everyone sat down. This time the table was no longer a square table, but a round table, a big round table.
Qin An found that there were more and more guests, so he asked Li Si to send people to build a large round table.
When this round table was made, Li Si thought it was not useful, but now he found that it was just right. If you squeeze a lot of people into it, you can squeeze in a few people.
Ying Zheng and others were full of praise for the whole lamb feast made by Qin An. They ate all the mutton and thought that Qin An's cooking was too little and there was not enough food.
Qin An was very helpless about this. This was a group of foodies, and they were also big foodies.
After the meal, the sky gradually darkened.
Qin An ordered the four Fusu people to wash the dishes and wipe the table.
"Village Chief, it's getting late tonight. Just spend the night in my room. Principal Li and I will squeeze in together," Li Si said.
Ying Zheng nodded and said, "Okay."
Qin An said: "Village chief, are there any masons in this village? In a few days, the brick kiln will produce bricks, and houses can be built.
I think the villagers can live in brick houses. More importantly, the school needs brick buildings. "
"Leave this matter to Li Si," Ying Zheng said.
Li Si replied: "Don't worry, sir, just leave this matter to me, but it will be autumn in one month, and the villagers will be busy harvesting.
The brick building work will take a while to be fully completed. "
Ying Zheng felt as if he was in another world and said: "Yes, autumn is coming soon, it's time for everyone to enter the autumn harvest."
