Chen Luo looked at the girl blocking the way, squeezed out a stiff smile on his face, and said, "Senior Sister Isabella, it's a coincidence......"

Isabella looked at him, the expression on her face was a little resentful, more unconvinced, gritted her teeth and said, "I didn't expect you to be the Blair teacher Britney said......"

As for the second-grader with a talent for math that Ms. Britney said, she had long wanted to get to know her.

Of course, at that time, she had the idea of comparison in her heart, but for several days in a row, every time she went to his classroom, he was "accidentally" absent, once or twice was a coincidence, and ten times it must have been him deliberately hiding.

After Isabella's investigation, she found out that the Blair that Teacher Britney was talking about was the rude person who hit him twice that day, and the famous magical waste material of St. Donas College.

Of course, that's not anymore.

A few days ago, after word broke out about the magic practice class, Blair was known as the fastest man in the entire second year, and even most third-year students couldn't match him in the speed and stability of the fireball technique.

However, after knowing Blair's identity, whether he is a mathematical genius or a magical genius, it is not something that Isabella cares about.

This impudent person actually covered her mouth while he was chanting a magic spell, and interrupted a magician's spell in this way------ is this a human thing?

For a lady, it is also a humiliation that cannot be forgiven.

Thinking of this, the anger in her chest that had been extinguished with great difficulty was born again.

Chen Luo saw that Isabella's flat chest began to rise and fall, and he was very worried that she would summon a fireball again, and the appearance of a beautiful figure in the distance finally made him see the dawn of hope.

"Teacher Britney!" Chen Luo greeted Teacher Britney from afar.

"It's Blair, I'm looking for you. Ms. Britney walked over with a smile on her face and said, "I have something to tell you." ”

When Isabella saw Ms. Britney, she temporarily suppressed the anger in her chest.

Chen Luo has a very good impression of Teacher Britney, not only because of Blair's relationship, but also because of her dedication to mathematics.

Teacher Britney said embarrassedly: "Regarding what you said, if a group of numbers starts from the second term, and the difference between each term and its previous term is equal to the same constant, then their sum can actually be described by the same simple formula, I have found this formula, and wrote a paper, which has just been selected by the journal, because the appearance of this paper is inspired by you, so this article is co-signed by us." ”

The reason she was embarrassed was that the article was inspired by Blair, who had apparently discovered the pattern and would soon be able to figure out the formula, and in doing so, she was suspected of stealing the results of her students' research.

Isabella's red lips opened slightly, and she looked at Teacher Britney in amazement, she was Britney's student, and of course she knew what co-signing meant.

Although this formula is not a major discovery, it is very ingenious and groundbreaking, and it is predictable that it will even appear in future textbooks, that is, it is very likely that the Britney-Blair formula will appear in the textbooks she will study in the future......

And from then on, the Kingdom of Loran, and even the Divine Grace Continent, all beginners in mathematics could not avoid Blair's name.

Thinking of this, she suddenly had a sour feeling in her heart,

For Chen Luo, it doesn't matter if he signs or not, all he cares about is magic, and it is better to give him some silver coins to sign his paper.

Casting magic is a very mental and physical thing, two pieces of bread a day, Chen Luo can't eat enough at all, Blair's pitiful savings can't even support half a month, the biggest problem he came to this world is to fill his stomach.

As if thinking of something, Ms. Britney handed him a small cloth bag embroidered with flowers, and said, "This is fifty silver coins, a reward from the Mathematical Association, and I think it should belong to you......"

Chen Luo's remuneration for working as a handyman in the library is food and lodging, two silver coins a month, fifty silver coins, and he needs to earn two years and one month.

No wonder Britney Spears says that scholars, like magicians, are equally respected in this world, not only respected, but also very profitable.

With these fifty silver coins, he won't have to worry about going hungry for a long time.

Of course, Chen Luo would not refuse stupidly, stretched out one hand to the money bag, and said politely: "How embarrassing is this, there is at least half of the credit of Teacher Britney in this......"

"Then I'll take half of it. Teacher Britney took back the money bag, took half of the silver coins from it, and handed the rest back to Chen Luo.

“......”

Because of his polite words, half of the fifty silver coins were missing, and Chen Luo couldn't wait to slap himself.

However, it seems that Ms. Britney is not a person with a solid background, and Chen Luo will no longer care, without her, Chen Luo's own paper would not be valued by the Mathematics Association, and it is likely that it will not be handed over to the reviewer.

Even so, Chen Luo was still a little distressed about the twenty-five silver coins, he thought for a while, and suddenly said: "I've been thinking recently, if a set of numbers starts from the second term, and the ratio of each term to its previous term is equal to the same constant, then their sum, is it also the same as the previous case, can be described by a unified formula?"

The formula for summing the difference series has come out, and the proportional series naturally cannot fall, after all, this is another fifty silver coins......

Teacher Britney looked at him sharply and asked, "You mean the mystery of Raus?"

"????" Isabella looked dazed: "What mystery?"

Chen Luo has been soaking in the library for the past few days, and has almost finished reading the history of magic, mathematics, and science, and nodded when he heard this: "Yes." ”

These days, Chen Luo was surprised to find that the law of development of mathematics seems to be unified, whether it is the mystery of Amers in ancient Egypt in another world, the "going out to look at the nine embankments" in the ancient Chinese "Sun Tzu's Sutra", or the "riddle of Laus" in this world, it is a problem of proportional numbers.

The description of the mystery of Laus is: Laus had seven wives, each wife had seven pockets, each pocket contained seven cats, and each cat had seven children, and asked the wife, how many pockets, big cats, and kittens there were......

It's a bit boring, no one is going to add it up, and one might be more concerned about whether Raus's kidneys are good than if they don't want to do it, but it's still worth studying if you look at it as a purely mathematical problem.

As a proportional series, the Lauss riddle has few terms, and the answer can be obtained by adding up one term, but what if there are ten, twenty, fifty?

If there is a formula that can summarize the sum of arrays with this law, this is another major discovery in mathematics.

Unlike the Equal Difference Sequence, the Equal Ratio Sequence actually appeared earlier, and corresponds to the famous Laus's riddle, if you can solve the Laus's riddle with a simple formula------ it would be a bit unreasonable for the Mathematical Society not to reward a hundred silver coins, right?

Ms. Britney asked, "You mean, you can summarize a problem such as the riddle of Raus with a formula?"

Chen Luo nodded and said, "It's just a little bit of preliminary progress. ”

Teacher Britney grabbed his wrist excitedly and said, "Go to my room and say!"

Seeing that Teacher Britney dragged that Chen Luo in stride in the direction of the teacher's dormitory building, Isabella, who was ignored, stomped her feet and quickly followed.

......

The derivation of the formula for summation of proportional sequences is very simple, but before modern times, the development of both mathematics and science was very slow, not to mention that in this world that pays more attention to magic, mathematics and natural science cannot even be called the embryonic stage in Chen Luo's eyes.

Teacher Britney has a good mathematical foundation, and as soon as Chen Luo was inspired, she picked up a quill and wrote a few lines of derivation on the paper.

Looking at the formulas she deduced, Britney brought in several arrays similar to the puzzle of Raus, and came to the same conclusion as she had added them one by one with addition.

"It's inconceivable, the mystery of Raus is about to be solved. Teacher Britney's beautiful eyes bloomed, looked at Chen Luo, and exclaimed: "Blair, your mathematical talent is incomparable, are you really unwilling to study mathematics with me?"

"Goo......

Chen Luo didn't answer, but his stomach responded.

The last class of the morning was history class, and it was already time for dinner.

"I almost forgot, you haven't eaten yet. Teacher Britney hurriedly ran into the kitchen, took out two pieces of cake, handed them to Chen Luo and Isabella, and said, "You guys eat something first, and I'll calculate it a few more times......

Chen Luo took the cake and ate it in two bites, which was the best thing he had eaten in the past few days.

Isabella looked at Ms. Britney, who was immersed in math, and knew that this was another remarkable discovery, and she had anticipated that a new "Britney-Blair" formula might soon be introduced.

Originally, her competitive spirit drove her to compare with Blair, but how can she compare now?

She took a bite of the cake in her hand, only to feel that her favorite dessert was suddenly not so sweet......