Chapter 491 The plum blossom picture is even better!

Looking at Shang Ruonan's comfortable appearance, Xu Shanchang was a little skeptical that she really understood or really had an answer.

Shang Ruonan nodded and said:

"Actually, it's not difficult at all."

Everyone else looked at Shang Ruonan. Shang Ruonan asked someone to bring a board, and then asked Hongyi to hold the board and put a piece of paper on the board. Make a small whiteboard, then pick up an ink pen, and draw a nine-square grid on the white paper:

"Yue Gongzi is talking about such a grid, right?"

Yue Gongzi nodded again and again after seeing it.

Then Shang Ruonan said:

"To make the sum of the numbers in each row and column the same, then among the nine numbers, find a middle number, five, in addition to five, the front one, two, three, four, and the back six, seven, eight, and nine respectively from the outside to the inside, that is, one and nine, two and eight, that is, the whole ten."

Then we put the five in the middle, nineteen for five, twenty-eight for five, thirty-seven for five, four and six for five, and each row and column is in its own row, and it is fifteen. I don't want to see the big number, the small number is not on the opposite side, and the four corners put the double number, and that's it. ”

"Wonderful! Wonderful! This coordination method is really wonderful. I've been reading this question since that day, and it's been almost half a month, and I haven't figured out how to calculate it. ”

Yue Gongzi slapped the table and screamed as if a cat had been woken up.

Shang Ruonan was stunned for a moment and said:

"It's not just that. This remains the same. The surroundings can be rotated, that is to say, these 28461937 can be reversed on the opposite side. Or the answer is the same. ”

The three princes' eyes were shining:

"How did Miss Fourth know about this algorithm?"

Shang Ruonan replied preparedly:

"This, too, was unintentionally taught my sister to count, and I thought of it when I was playing. It's just that we were only playing at the time, but we didn't expect the name to be Jiugongge. There's a little bit harder. Sixteen grids, if Yue Gongzi is interested, he can be counted as playing. Put the numbers from one to sixteen and sixteen in the grid, and the result is also four numbers horizontally and vertically, and four numbers diagonally. And it's all the same. ”

Sixteenth house? I can't count the nine houses, but the sixteenth house! However, for someone with a love of counting, this can be a challenge. Especially the little girl in front of me is finished. I can't say no.

Yue Gongzi also carefully wrote down this question and prepared to go back to study it.

Another counting enthusiast, Feng Shangshu, also wrote down the question immediately. And the third prince said:

"It seems that Miss Shang Si is very good at counting?"

The third prince laughed, where does Ruonan have time to study this, but Ruonan was born in a business, and what he does is also a business. I can't do without these counts. If the numbers are calculated, they are good for business or life. Master Feng should be well aware of this. The household department comes and goes, counting numbers. ”

"Yes, but our counting is just something that adds and subtracts. Compared with Miss Shang's questions, it really couldn't be simpler. However, when it comes to counting, the old man has a problem, and that is about counting. There is a question about chickens and rabbits in the same cage. ”

"Say: There are chickens and rabbits in the same cage, there are thirty-five heads on it, and there are ninety-four feet on the bottom. Can Miss Shang count this kind of question? ”

Shang Ruonan was stunned for a moment, then picked up his self-made pen to write and draw, and said: E-book

"Twenty-three chickens and twelve rabbits."

Feng Shangshu was stunned for a moment, immediately left his seat, stepped forward to check some things written by Shang Ruonan, and didn't know what Shang Ruonan wrote, and said:

'How did you figure it out all at once?' The old man calculated this answer at the beginning, but he didn't get out of the study for three days, and he was ashamed that I didn't calculate it, I finally pieced it up by myself. How many chickens and rabbits on paper were drawn. ’

Feng Shangshu looked at Shang Ruonan in surprise. Shang Ruonan smiled faintly and said:

"Isn't there a way to do this? You see, this chicken has two legs, and a rabbit has four legs, and if you let the chicken lift one foot and the rabbit lift two feet, the number of feet in this cage will be half less, right? That's forty-seven legs. But there are no fewer heads in the cage, and the rabbit has one more leg than the chicken. We thought that if each of them had only one leg, there should have been thirty-five legs in the cage, but now there are forty-seven, which is exactly one of the two legs of these rabbits. That is, forty-seven miles minus thirty-five, there are twelve rabbits. In this way, the number of chickens is clear at a glance. ”

"Lift your feet, lift your feet? I didn't expect this to be the case! You can lift your feet! Why didn't I think I could cut off some of my feet? ”

Lord Feng was very shocked and muttered as he walked off the stage a little dejected.

When other people heard Shang Ruonan's explanation, they immediately understood this truth, but how could people think of it all at once, but they just couldn't think of it? Some difficult problems, once they are solved, are simple.

After everyone understands the truth of this calculation, it will not be difficult to encounter this problem in the future.

Shang Ruonan slowly lost his breath and was about to step down, if he continued to be entangled like this, maybe he would be exposed.

When Shang Ruonan was packing up his things, Ouyang Ruihua spoke again. Originally, Ouyang Ruihua's goal was Murong Qing, but now, her goal is the third prince, even if she enters the Three Princes' Mansion to be a side concubine, and externally the two sisters marry a husband. And how good it is to be beautiful. Although there are only two starting points for her, one is the power of the three princes, and the other is to be angry with the county lord.

Unexpectedly, my father invited the third prince today. Now that I see that the third prince also admires Shang Ruonan very much, I feel unhappy at the moment. So he said coquettishly:

"Miss Shang Si is really good, she knows how to do poetry and counting, but didn't you say that you want to challenge all kinds of talents. I remember that among the girls here, Miss Lin's paintings can be said to be a must. The picture of the pine crane drawn by Miss Lin last time was also taken by Gu Guogong. ”

"Why don't we ask Miss Lin to come and draw with Miss Shangsi?"

The third prince nodded and said:

"It's really good. I've seen that picture too. ”

saw that the third prince took his own white, and agreed with his own opinion. Ouyang Ruihua was even more energetic, and said with a smile:

"Then the third prince can agree to let Miss Lin compare with Miss Shang's fourth?"

The county lord, who had not spoken, saw his sister so embarrassed. And that's still her husband. It's really shameless. The county lord said lightly:

"I haven't seen the pine crane picture, but do you remember the plum blossom picture in your study?"

The third prince nodded. The county lord said again:

"How does it compare to that pine crane picture?"

The third prince immediately said:

"The plum chart is even better!"

The third princess said lightly:

"Then you don't have to compare. The plum blossom picture is from the hand of Miss Shang Si! ”