Chapter 24 Xueba's Problem Solving Ideas

Qian Yang looked at the stones very quickly, because he felt that the stones provided by the Stone Master Association in the first round of exams were actually not difficult at all.

Either it's the kind of garbage that doesn't look good at first glance, or it's a high-quality rough with extremely typical characteristics. Don't look at Qian Yang, he always feels that he is a second knife, but these rough stones are as simple and clear as one plus one, and there is basically nothing to entangle.

In the blink of an eye, he had finished reading nine of the ten stones, and he had silently written down three numbers in his heart, which were a piece of five-element white salt sand, a piece of multi-treasure black black sand, and a piece of suspected nine-shadow elephant skin.

Why is it suspicious, because the gray-white elephant skin stone is wrinkled and rough, and it seems that there is no sand on the surface, but it feels very rough to the touch, and the Jiuyou Old Field and Yongchun New Field will produce similar elephant skin stones.

Of course, there are subtle differences between the two stones. According to Lao Dingtou, these two kinds of stones feel very different to the touch, one feels like the forehead of an old woman, and the other feels like the instep of the old man, which makes people sick in the stomach.

Unfortunately, Elder Qian had never touched either of these things.

And the elephant skin stone Qian Yang of the Nine Shadows Old Field had only used it once before, and he didn't feel pleasant, nor did he feel disgusting. He felt that the piece in his hand was not much different from the one he had touched before, but after all, because he had never seen the elephant skin stone of Yongchun Xinchang, he had to draw a question mark in his heart.

This elephant skin stone is also Qian Yang's only doubt, as for whether to choose this elephant skin stone, it depends on the performance of the last stone.

But when Elder Qian approached the last stone, he was dumbfounded on the spot, and there was also a stupid big man with tendons and flesh who was also dumbfounded.

At this time, the monks who participated in the competition had basically completed the process of identifying the stones, and only Qian Yang and the legendary "Master Wu" stood in front of the last stone.

Since Qian Yang saw this stone, he immediately showed a sad face. And that Master Wu was not so exaggerated, but he was holding a translucent bead in his hand, and he was shining back and forth at the stone, with a lot of doubt on his face, and it seemed to be mixed with a little curiosity.

Qian Yang's mouth pursed high, and he rearranged a certain old man who was out of tune in his heart: You still say that you are a master? After teaching me for so long, the first round of the exam was beyond the syllabus, how do you let me play?

said a thousand ways and ten thousand, in fact, it was Qian Yang who found the last stone, he had never seen it at all!

It was a fiery red, irregularly shaped rough stone with sharp edges.

The size of the stone is not very large, and if you throw it into a footbasin filled with water, it is estimated that it will overflow two tea-jars.

To say that the red-skinned rough stone Qianyang has still seen, whether it is red sand skin or red wax skin, it is not rare. However, most of the red stones on the market are reddish-brown or yellow-red, and some are even pure brown, but it is the first time he has seen such an extremely dazzling bright red.

I haven't seen it! I don't recognize it! What should I do?

Just if it doesn't exist, just pick the three pieces before?

No, Qian Yang's answer is no.

As a wonderful young man who has been nurtured by exam-oriented education for half his life, he can't do anything else, and the skills of the exam are definitely master-level.

You will get a full score for the questions you can get, and half a score for the questions you can't, which is just the minimum requirement. It doesn't matter if you haven't seen the questions, using the known knowledge to solve the unknown problems is the true meaning of the exam!

He lowered his head to look closely at the twisted shape of the stone, and then reached out to touch the skin, and there was a hard and smooth feeling from his fingertips, as if it had been painted

A layer of wax.

It's wax skin!

If you ignore the eye-catching color of the rough stone, this stone is no different from the common wax skin stones found in the mountains.

Turning on the flashlight, the color of the red rough stone became slightly darker under the strong light, and the color seemed to be a little closer to the dark purple. Qian Yang adjusted the angle of the light, and soon found a purple about three fingers wide and a darker color on the side of the stone.

Red and blue are purple, right?

You see, knowledge points that seem completely unrelated to the exam questions may provide some interesting information.

Gently caressing along the dark purple, there is a dimpled feeling that seems to be like nothing.

It's a dark python!

Well, the observation of the stone can come to an end for the time being, Qian Yang slowly closed his eyes and began to look for ideas for solving the problem from other angles.

As far as the stone itself is concerned, the outward appearance of this red stone is almost too good to be better. To judge the merits of a wax skin, the first thing to see is the smoothness and uniformity of that layer of wax skin, and this stone is almost perfect. Coupled with the striped python belt that was almost certain to be blue, Qian Yang was almost certain that the stone had extremely high value.

However, Qian Yang still remembers that the great old Ding Tou once said a very philosophical sentence: All the behavior of putting aside the scene and talking about the skin is a hooligan!

is a very simple sentence, but it exhausts the bitterness of the two knives.

The most direct example of this is the Kurashi. The yield of the baranga stone is extremely high, but the quality is extremely low, and many of the baranga stones with good external performance have no actual value at all, which is known to the world. Therefore, those who dare to sell the barang stone for money have an extreme temptation in their skins.

So where is this red stone from?

The answer is actually not difficult to guess, that is Hongtou Mountain Mine!

Even if Lao Dingtou is unreliable, he must have told Qian Yang about the types of output of each mine, how could he miss such a strange stone alone?

The only possibility is that this stone has never been on the market before.

I didn't have it before, but now I have, just in time for the Hidden Sword Gate to open up a new mine, and then contact the name "Hongtou Mountain", red!

The stone should be certain that it comes from Hongtoushan, and then it is the crux of the problem, is the quality of the rough produced by Hongtoushan Mine good? Will it be as good as the old field? Or will it be close to the pitfall people like the warehouse?

Qian Yang has no way of knowing the answer to this question, but since it is an exam, there are traces to follow after all, but he doesn't know that there is a solution method called "figuring out the intention of the questioner".

Raising his eyes and looking at the breezy Elder Chen of the Hidden Sword Sect on the rostrum, and then looking at the old god of the Hidden Sword Mine next to him, Qian Yang pouted and smiled secretly: The stone of the Red Toushan Field appeared in public for the first time, or did it directly face the backbone of the gambling stone industry of more than 1,000 people, with the figure of the two on the stage, would he take out a worthless stone to embarrass people? Will the Red Toushan Shifu be labeled as "garbage" as soon as it is on the market?

No kidding! If nothing else, this red stone is definitely the most valuable of the ten stones!

Qian Yang decisively wrote down the number of the stone, twisted his hip and ran to the side, for him, there is only one question left to be solved, that is, which of the three stones should he give up?

This question seems to be easy to answer, two of the three stones can be confirmed to be valuable, and the other is not sure whether it is valuable, so just give up the uncertain elephant skin stone

That's it!

But for a top student, if he comes to a conclusion in such a simple way, it is obviously very incomplete, and it is extremely unserious.

Scholarship should be rigorous, and this is especially true for problem solving. When faced with a problem that you can't be completely sure, you have to consider all aspects carefully, and if you dare to make a random decision with a pat on the head, the consequences are likely to be something you don't want to see.

As far as the multiple-choice question in front of Qian Yang is concerned, the various information he knows is actually enough to support him to conduct some more detailed analysis.

First of all, among these three stones, the most valuable should be the five-element white salt sand, and its external performance everywhere proves that its value is obviously higher than the other two.

The quality of Duobao Black Wusha should be a grade worse than that piece of white salt sand, and even if that piece of elephant skin stone really comes from the Nine Shadows Old Field, its value will definitely not be higher than that of white salt sand. So the stone that was eliminated should be chosen between black oosha and elephant skin stone.

The next question is a little complicated, because if the elephant skin stone is from the Nine Shadows Old Field, then the value will be higher than the black black sha, but if it is from the Yongchun new field, it is obviously not as good as the black black sand in the Duobao field.

And Qian Yang couldn't be sure which field the elephant skin stone came from, even though he felt that the possibility of this stone coming from the old field was higher, but doubts existed after all. So, he felt that he should make a hypothesis and see what would happen.

Of course, the assumption is premised on the fact that there is nothing wrong with his previous judgment.

Hypothesis 1: If Qian Yang chooses the elephant skin stone, and the elephant skin stone comes from the old field, he is equivalent to choosing the three most valuable stones among the ten stones, then he will get a full score in this round of exams, and the first place is not negotiable.

Hypothesis 2: Qian Yang chose the elephant skin stone, but the elephant skin stone came from the new field, then he is equivalent to choosing the two most valuable of the ten stones, plus a very worthless stone, then it is difficult to say where the final results can be ranked.

Hypothesis 3: Qian Yang chose many precious stones, and the abandoned elephant skin stone came from Xinchang, which is equivalent to choosing the three most valuable stones among the ten stones, and there is nothing wrong with it.

Hypothesis 4: Qian Yang chose many precious stones, and the abandoned elephant skin stone came from the old field, then he selected the stones that ranked first, second, and fourth in value among the ten stones, and a hundred points was definitely gone, but a ninety-nine points was definitely a good result.

In fact, the problem is solved here, and the key to the problem becomes how many points Qian Yang wants to get!

If he chooses more gems, then his final score is not one hundred or ninety-nine, of course, the probability of ninety-nine is much greater, because Qian Yang always felt that the probability that the elephant skin stone came from the old field was much higher.

If you choose the Elephant Stone, the final score will either be 100 or fail, and a 100 score is definitely much more likely than a fail.

So how do you choose? Make a mathematical expectation like you did last time?

Of course not!

We've been making choices all our lives, and the root cause of our choice is always – what do we really want?

What does Qian Yang want?

Is there an additional reward for taking a 100-point test? Of course not.

What he needed now was to be in the top five hundred out of a thousand, and ninety-nine points were enough for him. Then there is no reason for him to choose another option that requires risk, but only leads to false perfection.

Of course, if the exam rules are changed to the three most valuable rough stones must be selected to qualify, then there is no doubt that taking a gamble is the only correct solution.

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