Datang: I am the founding general in the beginning

Soon Kong Yingda arrived at the court, and after the visit, he stood in the center.

"I don't know what Your Majesty summoned you?" Kong Yingda bowed slightly and faced Li Shimin.

"Dr. Guozi, Kong Yingda, let me ask you, yesterday the Shenwei King and the elder monk Sun Wuji invigilated the exam for you, why did you lose?"

"You are all my erudite talents in the Tang Dynasty, why

is this the result?" Li Shimin asked with an inquiring look.

"Oh, it turns out that Your Majesty is asking the ministers about this matter, this matter can only be said to be that we are not good at learning and have failed to reach the actuarial level of the prince, and the prince has taught us a deep lesson, let me wait for the master, and learned a huge amount of arithmetic knowledge.

"This matter, the ministers and others have also studied, but they only think that it is too magical, that is, the method of doubling is adopted, so that a small number that does not look very inconspicuous has become a terrible number after many changes.

"That's what I've learned from the prince's arithmetic.

Kong Yingda said his feelings, but it made everyone a little confused, because it was too abstract.

Everyone just thought it was amazing.

"Yingda, the number you said eventually became an astronomical number?"

Li Shimin looked at him, wanting to hear a different answer from him.

"Yes, Your Majesty, in arithmetic, this is a more magical place, his cleverness lies in the constant increase, I think the prince is the best at interpreting such a problem, why not let the prince explain it himself?"

Kong Yingda has always been shocked by yesterday's events, and he also wants to see what kind of explanation Zhao Ziyun will give?

At this time, Li Shimin saw that Kong Yingda was reasonable, so he shifted his attention to Zhao Ziyun.

"Ziyun, you explain to everyone, you are the most authoritative. Zhao

Ziyun saw that Li Shimin said so, so he couldn't come out.

So he walked out, "Your Majesty, in fact, this matter is not very complicated, it is just the first contact of everyone, and they were deeply shocked by him, and the explanation is that everyone is attracted by the immediate interests, and they do not see the power brought by time or quantity."

"In other words, I'm trying to attract people with huge benefits, so that they think they've won, but in fact something that's hidden and ignored by them is changing the outcome. "

For example, if I immediately give His Majesty one million yuan and give you one penny on the first day, two yuan on the second day, four yuan on the third day, and so on, I will give Your Majesty this money in twenty days, and Your Majesty will choose which one?"

Zhao Ziyun looked at Li Shimin with a calm expression, and at the same time looked at the ministers.

They all looked like they were thinking.

"The second option, of course.

Li Shimin said proudly that because of yesterday's lesson, he knew how powerful this method was, so he said his choice without thinking.

Zhao Ziyun smiled lightly and did not answer directly, but turned to look at the ministers.

"What do you think, my lords?"

and many people chose the second option.

"Your Majesty, why don't you choose the first plan? What a temptation is that?"

Li Shimin smiled, "Isn't this a knowingly asking? Yesterday, your deeds were spread all over Chang'an, if you really choose the first option, wouldn't you be seen as a joke."

Kong Yingda, who was still standing at this time, had a faint smile on his face, and he didn't speak.

"Your Majesty, have you really made a good choice, don't regret it?"

Zhao Ziyun asked, and Li Shimin hesitated a little.

"I, I'll think again.

Li Shimin thought about it and quickly gave the result.

"I want to see how Zhong Aiqing chooses first, Yingda, you are a master of arithmetic, which one do you choose?"

Li Shimin once again focused his eyes on Kong Yingda's body.

"Your Majesty, on this topic, the minister chooses the first.

Everyone's eyes looked at Kong Yingda and exclaimed.

Ah? Isn't it enough to suffer losses? I was fooled yesterday, so why should I be fooled again today?

We must not be carried away by the immediate benefits.

What do you know? It's more real to grasp what is in front of you, and who can think of something too far away? It's also a bit unreliable.

There are also people talking about it underground.

"Oh, why did Kong Aiqing choose this way? Isn't it the second one?"

Li Shimin looked at Kong Yingda suspiciously and asked.

But Kong Yingda's eyes glanced at Zhao Ziyun before he spoke.

"Your Majesty, the prince actually said just now, saying that everyone is ignoring the power of time and quantity, and the present minister thinks that time is too short to reach the real power, so the first one is naturally more than the second.

Zhao Ziyun looked at Kong Yingda, this person is really an actuarial expert.

"Lack of time? How much is enough?Ziyun, it's better for you to explain!" Li

Shimin finally asked Zhao Ziyun.

"Your Majesty, what Dr. Kong said is right, just now the minister only said that it was only twenty days, and if you want the second result to be greater than the first result, it must be a month later.

"And on the twentieth day, it was only a little more than a thousand taels. Indeed

, it will be greater than a million taels after thirty days.

Modern finance will often cite this example, which is calculated as a penny, and after the thirtieth it is more than 10 million.

If you want to calculate, the ancient penny can be counted as the modern penny, because the ancient thousand pennies are consistent or one tael.

Li Shimin and other important ministers were very surprised when they heard this, and they suddenly realized.

"There really is such a magical algorithm in this world, wonderful!" Li

Shimin couldn't help but shout after hearing this.

The ministers were even more stunned by this method.

"Ziyun, how did you come up with such a method? Your wisdom really amazes everyone.

Li Shimin sighed for a while, and was really shocked by Zhao Ziyun's thoughts.

"Your Majesty, this is a story that I saw in a book, and I knew that there was such an example.

Li Shimin and the ministers looked at him curiously.

"What's the story? Why don't you tell it for everyone to hear?

Zhao Ziyun saw that they were all very studious, so he simply told them.

"Your Majesty, the story goes like this, that once a king played chess with a wise man, and they also made a bet, because of the famine in the country, the wise man wanted the king to give the food in the country to the relief of the victims.

"The way they bet is very simple, that is, if they lose, they agree to one condition, and the condition of the wise man is that if he wins the king, the king only needs to give himself some grain, and this grain only needs to fill the chessboard.

"The king thought about it, what about you, how big are the chess and cards? And the wise man has the condition of putting one grain on each of the first chessboard, two grains on the second grid, and so on, and each grid must be placed more than twice as much as the previous one. "

The chessboard was sixty-four squares in total, and I didn't think about it that much at that time, so I simply agreed.

"What's the result? Naturally, I don't need to say more, right?"