Chapter 70

"I like Huang Rong the most; she is simply too smart!"

"Look at my Nine Yin Bone Claw!"

At this moment, amidst the bustling discussion, Xue Xi threw out the doubts in everyone's hearts.

"Teacher, why did you suddenly talk about *The Legend of the Condor Heroes*?!"

As soon as the voice came out, he saw the math teacher on the podium start writing on the blackboard.

【Now there are objects whose number is unknown, divided by three, two remain; divided by five, three remain; divided by seven, two remain. How many objects are there?】

As soon as the chalk fell, relying on his familiarity with *The Legend of the Condor Heroes*, Xue Xi blurted out.

"This is the third question Huang Rong left for Yinggu!"

The math teacher on the podium seemed to nod with satisfaction and turned to explain.

"This question is our knowledge point today: the Remainder Theorem.

Actually, in the *Sun Zi Suanjing* by the Song Dynasty scholar Qin Jiushao, the solution was given."

The math teacher's voice was as calm and steady as ever, but in the whole classroom, it exploded like a thunderclap on flat ground.

"Huh?!"

"There's a source?!"

"Isn't the content in *The Legend of the Condor Heroes* fictional?!"

Xue Xi, who was originally leaning on the chair, straightened his back abruptly, and his eyes looked straight at the blackboard.

Different from the previous drowsy state, his eyes were now filled with curiosity like stars.

He never expected that the boring and dull math knowledge points would appear in *The Legend of the Condor Heroes* that he chases every day!

Xue Xi subconsciously held his breath, as if afraid that his breathing would interrupt the math teacher's train of thought.

At this moment, his curiosity had been fully aroused by the math teacher in front of him.

The math teacher on the podium also whetted everyone's appetite, then picked up the chalk and started writing and speaking in the air.

"The *Sun Zi Suanjing* mentions that from the common multiples of 5 and 7, 3 and 7, 3 and 5, find the smallest numbers 70, 21, and 15 that leave a remainder of 1 when divided by 3, 5, and 7 respectively.

That is:

70÷3=23... 1,

21÷5=4... 1,

15÷7=2... 1.

After that, multiply these three smallest numbers found by the remainders when divided by 3, 5, and 7, and add them up.

That is:

70×2+21×3+15×2=233

Then subtract the integer multiples of the least common multiple of 3, 5, and 7 from the added number 233.

That is the required number: X=233-105n.

When n equals 2, the smallest integer solution for this question is 23.

The general solution for this question can be written as: X=23+105n (n∈N)!

So, everyone, don't just watch *The Legend of the Condor Heroes* for the fun of it; there is a lot of knowledge in it!"

After the voice fell, the classroom, which had been silent before, was quiet for three seconds, and then it immediately became heated.

"Does that mean the questions in *The Legend of the Condor Heroes* aren't nonsense?!"

"My God, Ye Xuan is so amazing?!"

"I didn't read this part carefully; I'll go back and make up for it!"

Not expecting that *The Legend of the Condor Heroes* actually contained the application of math knowledge points, Xue Xi subconsciously asked.

"What about other math problems in *Condor*?!"

Xue Xi's voice was loud enough, which immediately attracted the math teacher to look over.

Then he saw the math teacher nod slowly.

"In the twenty-ninth chapter, Yinggu was calculating the square root of 55,225, and Huang Rong blurted out 235. Does everyone remember?"

As soon as this question came out, almost the whole class nodded.

Xue Xi was naturally no exception.

Staring at the burning eyes of the crowd, he saw the math teacher on the podium writing and saying.

"This question happens to be the twelfth question in the 'Shao Guang' chapter of the *Nine Chapters on the Mathematical Art*.

Now there is an area of 55,225; what is the side length of the square? Answer: 235 steps.

Suppose there is an area of 55,225 square, turned into a square, what is the side length? Answer: 235 steps.

Isn't this also our knowledge point?!"

As soon as the voice came out, Xue Xi was stunned again.

More than half of the class had passed by now.

371

729

119

But for him, that boring and annoying math had become so clear and interesting at this moment.

Never thought that in *The Legend of the Condor Heroes*, there were shadows of math everywhere!

At this time, not only him, but the students beside him were like a pot exploding, discussing fiercely.

"*The Legend of the Condor Heroes* also mentioned the *Nine Chapters on the Mathematical Art*?! I thought the author wrote it casually at first..."

"I suddenly feel like I need to read it again!"

"It turns out *The Legend of the Condor Heroes* has so much math knowledge?!"

Just as Xue Xi was still immersed in shock, he heard the bell ring for the end of class, and the math teacher leisurely assigned homework, his tone even carrying obvious admiration.

"Today's homework: find all the math problems in *The Legend of the Condor Heroes*. Everyone can read this book a few more times!"

As soon as the voice fell, the whole classroom boiled over.

The math teacher in front rarely recommends books; I didn't expect him to recommend *The Legend of the Condor Heroes*!

This is simply silent praise and compliment!

And Xue Xi on the side clenched his fists even tighter.

He also secretly made up his mind to read it a few more times when he got back!

After class, Xue Xi casually uploaded the recording of the whole class to the internet, just as a record of daily life.

However, what he didn't expect was that as soon as the video was released, it started to become popular with unprecedented heat.

More and more people clicked in as soon as they saw the words *The Legend of the Condor Heroes*.

After watching the video, every audience member was shocked.

Never expected that Ye Xuan's *The Legend of the Condor Heroes* would be directly used as an analysis case for high school math classes!

It actually contained so many high school math knowledge points!

Countless people left messages below.

"As a fan of *The Legend of the Condor Heroes*, I suddenly feel so ashamed..."

"Ye Xuan is so particular about writing a novel; there is actually math knowledge..."

"Read a novel and learn math?!"

As the video went viral, a new entry made it to the hot search.

【High school math class assignment: What math problems are in *The Legend of the Condor Heroes*?】 ===== CHAPTER 73 =====