Not only Duanmu Qi was not convinced, but other people also whispered to each other, and most of them also doubted whether there was something greasy in it, thinking about Duanmu Fei's performance in the past, how could she not win Duanmu Qi!

Besides, although the question just now is not very difficult, it is indeed a bit detouring.

They all have the confidence to give them a cup of tea, no, half a cup of tea, they will definitely be able to figure it out, but Duanmu Fei's calculation is too fast, and in less than five breaths, she has already come up with the answer!

"Sister Scarlet," Duanmuxian suddenly asked, "Grandfather asked you, how did you calculate this question?" ”

Everyone else also looked at Duanmu Fei, their eyes puzzled and a little curious.

Duanmu Fei obediently blessed Duanmu Xian, and replied as a matter of course: "Back to grandfather, as long as you tear off two small beads from each line, you can calculate it!" ”

Duanmu Heng's eyes lit up, and he stroked his palm thoughtfully and praised: "Fourth sister, your algorithm is interesting!" Yes, as long as you tear off two beads from each loop, the remaining beads belong to the second type of loop, and then divide by two, you can immediately calculate the number of the second kind of loop. Wonderful, wonderful! ”

His question is actually a slight change from the question "Chickens and Rabbits in the Same Cage" in the second volume of "Sun Tzu's Sutra", however, he didn't expect Duanmufei's algorithm to put aside the existing ideas in the past and find another way.

Interesting! The way of arithmetic is really broad and profound!

Duanmuxian also let out a hearty laugh, obviously quite satisfied with Duanmu Fei's answer, and said, "Sister Scarlet, is it good for grandfather to test you again?" He didn't notice at all that the face of the He family beside him sank, and he clenched the Buddha beads in his hand.

"Grandfather, please." Duanmu Fei nodded in response.

Duanmu Xian stroked his beard and asked in a deep voice, "Sister Scarlet, do you know the Nine Palaces Luoshu?" ”

Jiugong Luoshu is to fill in the numbers from one to nine in a nine-square grid, so that the sum of several numbers in any horizontal row, a vertical row and diagonal in the nine-square grid is equal, which is also called a third-order magic square.

Duanmu Qi was secretly happy in his heart, a sharp glint flashed in his eyes, and he replied before Duanmu Fei: "Grandfather, I know." Nine sons are obliquely arranged, up and down to the other, left and right, four-dimensional stand out, wear nine shoes one, three on the left and seven on the right, two or four for the shoulder, six or eight for the foot. ”

4、9、2

3、5、7

8、1、6

This time my grandfather came up with the question, and she was the winner!

Duanmu Qi glanced at Duanmu Fei triumphantly, but immediately after, he listened to Duanmu Xian continue: "Sister Qi explained well. Today, though, we're going to play something different. It is still necessary to fill in the numbers 1 to 9 in the nine-square grid, but it is necessary to make the sum of the numbers in any horizontal row, vertical row and diagonal line in the nine-square grid unequal. ”

Hearing this, Duanmu Heng's eyes bloomed, and he couldn't help but try to calculate by heart, and his index finger drew numbers on the desk on his right hand.

This question is the opposite, fresh and interesting, but I'm afraid it can't be solved in a while.

Duanmu Qi took a deep breath, tried to calm down, and tried to adjust the order of the numbers on the third-order magic square she just read, no...... Wrong......

In silence, Duanmu Fei picked up the wolf pen on the case again, waved the pen without hesitation, and after writing down a string of numbers, he put away the pen and said: "Grandfather, I answered well!" ”

In the hall, there was a commotion again, and everyone looked at Duanmu Fei in disbelief.

Duanmufei directly picked up the answer sheet, turned it to Duanmuxian, and asked, "Grandfather, did I answer correctly?" ”

There is more than one answer written on paper.

1、2、3

8、9、4

7、6、5

And the second one is-

8、2、4

1、9、3

7、6、5

After everyone quickly did the mental arithmetic, they found that these two answers were correct, and they let out an incredible exclamation, and the blood on Duanmu Qi's face instantly faded.

Duanmu Xian looked at Duanmu Scarlet with some surprise, and there was a bit of scrutiny in his shrewd eyes.

His fourth granddaughter doesn't look very bright on weekdays, but she knows how to draw inferences from one another, and she seems to be quite talented in arithmetic, which is like him.

I think he was also said by Mr. when he was young and just entered school, but he didn't accept his fate, and he was able to hit Tanhua at a young age, and his career has been smooth sailing since then......

Duanmuxian let out a hearty laugh and praised: "Very good, Sister Scarlet, you have to learn to learn!" ”

How come?! I was fooled by this fool again!

Duanmuqi had a secret hatred in her heart, and she trembled slightly with anger, but she didn't dare to say much in front of her grandfather.

"Thank you grandfather for the compliment." Duanmu smiled and blessed Fu's body, looked at Duanmu Qi, took a step closer to her, and said, "Second sister, I won." ”

Her words seemed to be a declaration, and it seemed to remind Duanmuqi of something, Duanmuqi thought of the gambling contract for a moment, her face turned pale, and she subconsciously looked at Xiao He.

Xiao He hurriedly said: "It's just a matter of learning between sisters, where is there anything to win or lose." She tried to muddy the mud and obscure the matter.

Duanmu Fei remained silent, and quickly glanced at Duanmu Xian, who was drinking tea.

When she was still Chu Qingci, she had heard her grandfather, Mrs. Chu, evaluate several cabinet ministers, and there were only twelve words for Duanmu Xian:

"It is its friendship to seek its own benefits, and it is clear that its way is planned for its merits."

Although it was the first time she had met Duanmuxian, she trusted her grandfather's judgment.

Today, since she has shown "some" talent in arithmetic, that Duanmu Xian will definitely think a little higher of herself.

Thinking of this, Duanmu Fei deliberately said with an innocent face: "Losing is losing, and winning is winning." If the second sister doesn't want to lose, it's better not to compete with others in the future. ”

Then, as if he wanted Duanmu Xian to call the shots, he looked at him, his eyes clear, "Grandfather, are you right?" ”

Duanmu Xian was thoughtful.

Whether it is Duanmuqi or Duanmufei, they are both his granddaughters, and now that Duanmufei is better, he doesn't mind helping him.

In the final analysis, Duanmuqi is spoiled, and he should be taught a lesson.

"Sister Qi, you lost this time!" Duanmu Xian frowned slightly, and said, "Just now you took the initiative to compete with your fourth sister to learn arithmetic, as an older sister, you still want to talk without words?!" You are no longer a child, since you dare to make a bold bet with your fourth sister, you should be a talker, and you will be true to your word! ”