The book continues from the above, and the last book said that the competition between the two sides has entered the last game, and the master of this game on behalf of the Mongolian people is Yuan Chengzhen, the sect leader of the Thousand Mountains Sect. He also has another identity, that is, the gentleman who taught the disciples of the Thousand Mountains Outer Sect the number of the six arts. For Li Tianxin personally, this fat man has a third identity, that is, an enemy who does not share the sky. Of course, this enemy is not the enemy, but as the saying goes, if you have a fart, you don't let go of your body, and if you have a hat, it is not conducive to development, so of course Li Tianxin will, take advantage of this opportunity, raise his eyebrows, and let this little old man deeply understand his mistakes. So it led out, thousands of sails passed by the side of the sinking boat, and ten thousand trees were spring in front of the sick tree. The mountains and rivers are poor and there is no way out, and the willows and flowers are bright and another village.

Tianxin took the bamboo pen in her hand and gently knocked it in the palm of her hand, she wondered how to come up with this first question, whether it was to test the water by throwing bricks and jade, or to make a big move directly, seize the opportunity, and extinguish the majesty of this fat old man. Originally, she Li Tianxin was not the kind of person who grinded and chirped, but Yuan Cheng Zhenren, after all, was the sect master of the Thousand Mountains Sect, and she must not be an ordinary person. If you make a rash move, I'm really afraid that something will go wrong.

Hongying originally thought that Tianxin would have a hard time answering Yuan Chengzhenren's question. But who would have thought that she answered the question just now, smoothly, in one go, without the slightest hesitation. Now it's her turn to come up with the question, but she is stuck, like a monk knocking on a wooden fish. She was about to remind Tianxin loudly, but was stopped by Wei Jinhong. The former was a little impatient, and the latter motioned for her to wait patiently, he knew that Li Tianxin would not let them down.

Yuan Cheng Zhenren, who was standing opposite Li Tianxin, did not urge, he looked at Li Tianxin with kind eyes, and was about to open his mouth to encourage, but Li Tianxin opened his mouth.

"Nine hundred and ninety-nine yuan, buy one thousand pear fruits in time, nine eleven pears, seven fruits and four yuan. May I ask Yuancheng Zhenren, how much is the price of pear fruit? In the end, Li Tianxin chose a topic of medium difficulty and used it to explore the virtual and the real first.

After hearing this, Yuan Cheng smiled innocently. When Hongying saw his smile, her heart instantly cooled in half, and he untied it after a lot of effort. If the rest of the questions were like this, they would be completely crushed. Wei Jin Hongye was a little stunned, this is too fast, he just had some ideas, this old man actually has the answer? Everyone in the audience also showed surprise on their faces, and they couldn't stop admiring, the people of the Thousand Mountains Sect Sect were really not mortals.

Tianxin didn't expect that the first question came out, and it hit the muzzle of this old man's gun, this time things are a bit tricky.

Yuan Cheng Zhenren waved his small fan slowly. "Oh, Xiaoyou, you said it too fast, say it slowly, I don't remember it when I'm old. Today's younger generations, don't they know that they respect the old and love the young? ”

As soon as these words came out, the audience burst into laughter, and the audience couldn't help but joke. "I thought it was a powerful horn, but I didn't expect it to be a big-bellied grasshopper."

"Hahahaha, I thought it was some kind of clever calculation, it turned out to be the back of the ear..."

"Is this fat old man really the sect master of the Thousand Mountains Sect, I'm afraid it's not borrowed clothes?"

"Uncle, if you don't admit defeat, we won't laugh at you. Hahahaha"

Hongying's jaw is about to fall to the ground, this is shrimp, her mood is very complicated now, although Yuan Cheng Zhenren is on the side of the Mongolian people at this time, but he is also the sect leader of the Thousand Mountains Sect, in front of the public, so informal, is it really good?

Li Tianxin twitched the corners of her mouth, and she said word by word. "Nine hundred and ninety-nine dollars... Timely pear fruit to buy a thousand... 11 pears, 9 pears, 7 fruits, 4 pennies... How much does a pear fruit cost? ”

"Little friend, your topic sounds quite rhyming." Yuan Cheng Zhenren touched his beard, his eyes full of approval.

As soon as Yuan Cheng Zhenren's words came out, everyone was stunned again, this old man was actually a fake. How could the Qianshan faction have such a funny sect master, this is clearly the uncle of the family next door to the village. Tianxin looked at the white and chubby old man in front of him, and really knelt down for him. It's not a pair, and rhyme isn't the point, okay. Although I wanted to be kind to remind him, for the sake of the future days in Qianshan, Tianxin finally said politely. "What do you think... That's it..."

"Since Xiaoyou just used 'Tianyuan' as a hypothetical item, then the old man borrowed it and used it." Yuan Cheng Zhenren restrained the temperament of the uncle next door just now, and instantly became majestic, and his expression became serious. He held a pen in his left hand, and while he did a quick calculation on the sand, he still had words in his mouth. "A total of 1,000 pears and fruits can be bought for 999 yuan, 9 pears can be bought for 11 yuan, and 7 fruits can be bought for 4 yuan.

Yuan Cheng Zhenren was chattering, and the people present were thinking along with his words, and the scene at this time was like a large-scale lecture scene. Hongying frowned, calculated, and finally picked up a small stone on the ground and ran to the side of the land to write and draw.

"You see, we can set the pear to have 'Tianyuan', then the fruit is a thousand minus 'Tianyuan'. Yuan Cheng Zhenren patiently analyzed. "Then eleven pennies divided by nine is the price of each pear. Divide four pennies by seven, which is the price of each fruit... So. In the question, the price of each pear is multiplied by 'Tian Yuan' to be the total price of the pear. The price of each fruit is multiplied by the total of 1,000 minus the 'Tian Yuan'. Then we come up with an equation and add them up, which is exactly nine hundred and ninety-nine dollars. ”

"But what's next?" Someone in the audience shouted.

"I'm afraid the old gentleman didn't miscalculate."

"Yes, the numbers are inexhaustible."

"That's right, it's impossible to get rid of these seven and nine."

Hongying also counted here, and she stroked back and forth, but she couldn't figure it out. Wei Jinhong looked at the way everyone racked their brains, and couldn't help but chuckle, these Central Plains people, just wait for the answer, why do you have to ask for trouble. Burigud seems to have similar thoughts to Wei Jinhong, and compared to these Han people, he doesn't care about the answer to the question at all. I don't understand why these Han people are so fascinated by this.

Tianxin has not relaxed, the wisdom of the ancients is immeasurable, because the problem she came up with at this time is the mathematical problem in her world, ancient books.

"Little friend, your topic is a bit unkind." Yuan Cheng Zhenren stroked his beard and continued to calculate, when suddenly he changed his words. "But if we can find a multiple of seven and nine..."

Tianxin suddenly became nervous, because this fat old man had found the most crucial step to solve this problem.

"That's solved." Yuan Cheng Zhenren proudly fanned his little fan.

When everyone in the ring heard his four words, they all held their breath and waited for his answer. "Yuan Cheng Zhenren, are you going to tell me how to untie it?"

"Yes, uncle... No... Yuancheng Zhenren, don't sell it. ”

Yuan Cheng Zhenren smiled innocently. "We can find the common multiples of seven and nine, and then multiply them to the left and right sides of the equation respectively."

"Why multiply by their multiples?"

"Do you want to take both sides?"

"Multiply by their multiples to approximate the nine and seven below, and multiply by both sides of the equation to keep the equation in balance." Yuan Cheng Zhenren raised his eyes to look at Li Tianxin. "Tianxin Xiaoyou, you say, is what the old man said right?"

"It's the younger generation who is ugly." Li Tianxin really admired the wisdom of the fat old man, when she saw this problem, she pondered for a long time before making it, and the old man caught the solution point of this problem in the blink of an eye, which is really amazing.

Then, according to the step-by-step calculation, the answer will naturally come out. It cost a total of 803 yuan to buy pears, and a total of 196 yuan to buy fruits. After checking again, the sum of the two is exactly equal to the known 999 coins of the title. When Yuan Cheng announced the final answer, the audience burst into warm applause, as if a long drought was a rain.

"Wonderful!"

"He is worthy of being the sect master of the Thousand Mountains Sect."

"I didn't expect this uncle to be quite reliable." Everyone seems to have forgotten that the uncle in their mouth is a master sent by the Mongolian people, probably this is the charm of arithmetic.

"You answered correctly, it cost a total of eight hundred and three yuan to buy pears, and a total of one hundred and ninety-six yuan to buy fruits." Li Tianxin sighed, and now he is tied one to one, and he is back to square one. This old man is so difficult that Tianxin has no bottom in his heart.

"Tianxin Xiaoyou, based on what you just gave me, there is a question that makes people sweat... Come and don't be rude, my next question is more interesting. Yuan Cheng Zhenren's two small eyes the size of mung beans flashed with thief light.

"Speak, please." Li Tianxin carried the bamboo pen on his shoulder.

Hongying and Jinhong looked at each other, and they became more and more sure that this Yuan Cheng real person was really not easy to mess with, and would be a stumbling block to the end of his competition. But the two of them are not good at this, so they can only wait and see what happens.

"The Red General ordered troops, one column for every three people, one for one person, one column for every five people, and two people for the remainder. There is a column for every seven people, and there are four remaining people, and there are one column for thirteen people, and there are six people left. Yuan Cheng Zhenren's eyebrows fluttered and waved his small fan, as if pointing to the country. Tianxin Xiaoyou, how many soldiers are there? ”

Everyone present listened to the confusion, what is one column or two columns, this is a test of the formation of troops, or the application of calculations. This topic is also too tricky and weird.

When Hongying heard the title of this second question, she really sweated for Tianxin. Because of the first two questions, there is still an entry point, this question is really not understood, no, to be precise, the literal meaning is understood, but I don't know where to start.

Facing everyone's helplessness, she Li Tianxin suddenly smiled, she didn't expect this fat old man to start digging a pit for her, this question can be said to have an answer, and it can also be said that there are many answers. The stinky old man played with her yin, since he set up such a hospitality, then she wanted to use it to her heart's content!

"Little friend of Tianxin, do you know the answer?" Yuan Cheng Zhenren cast a provocative gaze at Li Tianxin,

"This question is indeed a hot potato." Tianxin paused. "But the disciple has already thought of a way to solve the problem."