Yan Jue asked for a pen and paper, and Li Er sent someone to get it. However, Li Liyuan took the initiative to send it over and asked the maid to leave. She personally poured wine for a few officials, which made Li Er very gratified.
She couldn't help but take a few more glances at Yan Jue and found that this little brother was quite pleasing to the eye. Her face blushed slightly from embarrassment. Li Er saw this and laughed even more happily.
Yan Jue was also paying attention to Li Liyuan. Her face was like a peach blossom, bright and moving. She was only fourteen years old, but she was a beauty. Even without makeup, she could still suppress other beauties. Li Er, who was of Hu descent, had a mixed-blood daughter. She was indeed blessed by heaven and earth. Her skin was as white as jade, and she had bright eyes and white teeth. She was a beauty. Yan Jue was very satisfied with this future daughter-in-law.
Yan Jue wanted to laugh. In the Tang Dynasty, where the definition of Pythagorean was a super difficult problem, what questions could Zhangsun Wuji come up with?
As expected, Zhangsun Wuji smiled and said," Marquis Yan, let me give you a question. Let's see if you can answer it. Today, there are pheasants and rabbits in the same cage. There are thirty-five heads on the top and ninety-four feet on the bottom. How many pheasants and rabbits are there?"”
Fang Xuanling smiled, Du Ruhui smiled, Li Er smiled, Wu Shi smiled, and Yuchi was dumbfounded.
They were all waiting for Yan Jue's answer.
"Lord Zhangsun, is it a difficult problem for chickens and rabbits to be in the same cage?" Yan Jue said disdainfully. There are thirty-five heads above and ninety-four feet below. Twelve rabbits and twenty-three chickens. How dare you say such a simple child's question?”
Zhangsun Wuji's old face turned red. He was a little angry, a little embarrassed, and a little surprised. He asked in a low voice,"How did you calculate it?"
"Is it difficult to calculate? Divide ninety-four feet by two, and the result is thirty-five minus twelve. This is the number of rabbits. 35 minus 12, 13, this was the number of chickens. This was too simple.”
Li Er and the others were shocked. Zhangsun Wuji said blankly,""Divide by what?"
" The most basic algorithm is addition, multiplication, and division," Yan Jue said with a smile." Adding is the addition of two numbers." Subtracting the majority meant reducing the number. Of course, it was also possible to reduce the majority from the minority. Multiplication was the multiplication of even numbers. For example, seven seven forty-nine, nine nine eighty-one. This was multiplication, and it was the enlightenment of mathematics. Division was the most difficult. It was to divide a large number by a small number. For example, 90 divided by 3 would result in 30. Dividing thirty by two, the result was fifteen. Fifteen divided by five, the result was three. Dividing three by two, the result was one and a half. This was division. The above is addition, multiplication, and division. I could recite such simple arithmetic problems like chickens and rabbits in the same cage backwards when I was four years old.”
The few of them were dumbfounded. Li Er asked,"Add, subtract, multiply, and divide?"
Yan Jue nodded.
Then, he took out a piece of paper and wrote down a question.
"It's really good calligraphy."
"It's not running script, cursive script, or seal script. How can it be written so beautifully?”
The few big shots were stunned by the font.
Li Liyuan poured the wine and was stunned. The wine overflowed and wet Foolish Yuchi's crotch. It took her a long time to react. She quickly put the wine pot down, her face red with embarrassment, and kept a distance.
In a while, Foolish Yuchi would probably be accused of peeing his pants.
"Yes, Lord Zhangsun. This is the question I came up with.”
After Zhangsun Wuji finished reading the question, his face turned as black as the bottom of a pot. This question was unheard of.
"Old Yuchi, you peed your pants." Fang Xuanling chuckled.”
Li Liyuan's face was red and she didn't dare to look up. Foolish Yuchi stood up, his old face even darker. The angry old Yuchi had no other choice. Fortunately, his clothes were dark in color, so it was not obvious. He silently pinched it with his hand, but accidentally pinched off a few hairs. He grimaced in pain.
Yan Jue wrote another question on the paper and said,""Lord Zhangsun, you can study this topic at home. Take your time. There's no hurry.”
Yan Jue dried the paper, folded it, and gave it to Zhangsun Wuji to study after he got home. Then, he spread the question on the table and said,"Three people staying in the inn, ten wen per person; The boss asked the waiter to return five coins for the thirty coins. The waiter deducted two coins and returned three coins. The three of them each paid nine coins for the hotel, which was thirty-nine twenty-seven coins. Adding the two coins in the waiter's hands, it was only twenty-nine coins. May I ask where the one coin went?”
"Thirty copper coins, return five copper coins, deduct two copper coins, twenty-seven copper coins, a total of twenty-nine copper coins? Eh, where did that one coin go?"
"Strange, strange, really strange. Where did that one coin go?”
"What a strange question. Your Majesty, I don't know how to calculate.”
Zhangsun Wuji looked at the thirty wen question in a daze and felt uncomfortable. This was not as simple as the chicken and rabbit in the same cage or the three-fold well.
This question involved mathematics, reasoning, and logical thinking. If one did not know the answer in advance, it would be very difficult for an ordinary person to solve it, let alone these apes who had not completely evolved.
Yan Jue cupped his hands and said," Your Majesty, I'm not feeling well. I need to ask for leave to go home. I need to rest for three days. Please allow me to be crowned in court three days later."”
Li Er nodded in agreement and asked Eunuch Wang to send him off. He also rewarded him with some daily necessities and sent them to Langya Marquis Manor.
The manor had been properly taken care of, and Li Er had also arranged for dozens of servants to move in.
Yan Jue did not go to the Marquis 'Mansion, but led his horse directly to the Yan Family. Before he came, he had orders to ride, but the Tang Empire had a law that horses were not allowed to gallop in Chang' an. Otherwise, he would be forced to walk three hundred miles. How would he feel?
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[PS: Let's forget about the multiplication formula. I'm burning up so I can only delete it.]
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