A disc-shaped object lies upright in the mall, emitting a soft and extravagant golden light.

The light flashed and shined, and Wang Yan smelled the smell of fortune.

If you look closely, it's actually a turntable?

Hey, what a fresh prop!

【Euro-Africa Turntable (Elementary)】

【Number of uses:1】

[Price: 1 million]

[Explanation: There are always people who feel that they are angry, but in fact they are covered in black meat. Less mouth cannons, spend money to test!]

Oops, I'll go!

Broken props are quite provocative, huh?

Wang Yan was a little unconvinced, and rolled up his arms and sleeves, eager to try it immediately.

However, wait until you see the details...... Wilted.

The wheel has a total of 10 squares, divided equally, and each grid occupies a 10% proportion.

It is divided into four colors, namely white, green, blue, and gold.

The white is three squares, and there are no prizes in it, but there are four words written on it, not a relatively polite "thank you for your patronage", but a biting ridicule - non-chieftain is rough!

Obviously, there is a 30% chance that the wheel will be lost.

One level higher, it's four squares green.

The four prizes are different, Wang Yan first pays attention to the price, the cheapest one, the mall price is 200,000, and the most expensive one, the mall price is 800,000.

This means that there is a 40% probability that the blood loss is 200,000-800,000.

There are only two blue prizes, priced at 1.5 million and 2 million respectively.

The last slot left is a golden reward with a price of ...... 5 million!

So the result is obvious, Wang Yan used primary school mathematics knowledge to calculate, 40% probability of small loss, 30% probability of losing money, 20% probability of small profit, 10% probability of big profit.

"Stinky rascal!"

Brother Fugui was so angry that he was extremely dissatisfied with the black-hearted system.

If the probability of winning or losing is 50% to 50%, at least it can be regarded as a fair bet, which is really wrong, then no one is to blame, and he will hit the wall for a while and admit that he is unlucky.

What the hell is this now?

70% chance of losing!

Silly beep to play with you!

After Wang Yan finished scolding, he glanced at the cash in the panel, removed the 100,000 yuan for Chen Xiang to settle the bill, and there was still 1.62 million that could be used at any time, and then gritted his teeth fiercely.

"Payment!"

Remaining salary: 620,000.

System experience: 719/2500.

Items: Destiny Child, Extraordinary Forced Card, Dual Flavor Gourmet Card, Drunk True Heart Card, Euro-African Wheel (Beginner)

Damn?!

Didn't you say you wouldn't gamble?

Mr. Wang, why are you so inflated?!

Wang Yan really didn't swell.

The result of elementary school math is a blood loss, so you are elementary school students, hehe.

Brother is 79 intellectual, the best of the best!

And the basics of statistics that I just learned are really not given for nothing.

In probability theory and statistics, there is a specific concept called "Mathematical expectation value", which translates to "mathematical expectation value".

Definitions aside, let's take the simplest example - all casinos, designed gambling programs, apply this concept.

For example, Las Vegas roulette, which is similar to Euro-African roulette, has a total of 38 squares, corresponding to 38 numbers, and you can bet on a single number for $1 and get $35 for hits.

The math expectation is calculated, and the result is -0.0526.

That is, on average, for every $1 bet a gambler loses 5.26 cents to the casino.

This is a fixed probability, as long as the sample size is large enough (there are enough gamblers), then it is a sure win.

Therefore, regular casinos do not have to pay thousands at all, and they can make money every day by recruiting customers.

After Wang Yan complained about the black heart of the system, he instantly calculated the mathematical expectation of the Euro-African turntable.

(500×10%) + (200×10%) + (150×10%) - (80×10%) - (60×10%) - (40×10%) - (20×10%) - (100×30%) = 350,000

Math expectations are positive.

This means that as long as you play enough, you can earn 350,000 yuan on average for each time you play.

Don't bet if you're stupid!

Not only to gamble, but also to gamble until the end of the day!

You give me the mentally retarded system, and refresh a turntable for my brother every week in the future, do you dare?!

System: o((⊙_⊙))o.

If the system has wisdom, it will definitely scold the mother.

Give you so much money every day to let you go out to surf, you are not a good driving girl, and you will learn those messy things!

Take the mathematical knowledge pit system, what kind of god are you!

（╯‵□′）╯︵┴─┴

Stumble!

……

However, the system is not intelligent, so the room is quiet, only the sound of Wang Yan's excited breathing.

"Start the lottery!"

The dial turns, turns, turns, and the hands sweep all the way over white, blue, green, gold......

Eventually, by a fraction of a centimeter, they passed through another white area and finally stopped in the green area.

Hemp eggs!

It's a loss!

However, Wang Yan only complained, but did not have any remorse.

It is impossible to earn every time to play probability, but as long as the system does not change the design and the mathematical expectation is always positive, Wang Yan will dare to play with Ya until the sea is dry.

Shenhao, who understands mathematics, is so confident!

took out the final reward casually, Wang Yan looked at it and was happy.

Huh?!

It doesn't seem like there's anything to lose?

The prize is a skill book.

【Hard pen calligraphy (master block letters)】

[Raise your hard pen writing level to the master level, just one step away from the grandmaster]

[Price: 400,000]

[Note: block letters only.] True, line, li, grass, seal and other calligraphy need to be studied by themselves]

Master-level regular script, is it useful?

It didn't work much.

In modern society, there are fewer and fewer places to write, let alone a hero like Wang Yan, there are absolutely not many opportunities to write something by hand.

But to change the question: is it worth it?

It's worth it!

How can it not be worth spending 1 million to buy a master-level skill?

As a god, you can never be short of money.

Therefore, anything that can improve one's own quality, as long as it can be exchanged for money, is worth it.

Wang Yanmei used up the skill book, and in an instant, a vast amount of knowledge poured out of his mind.

There was paper and pen on the desk, Wang Yan sat down with great interest, groaned slightly, and wrote down four names.

Wang Dayuan, Wang Xiufang, Wang Yan, Liu Li.

Iron bone silver hook, dignified in the middle.

Wang Yan was overjoyed, thought about it, and added a fifth name.

He Meng.

It is slightly deformed, and it is no longer a proper block letter, but it is more flavorful than at the beginning.

Because, a little more of your own style.

The intelligence of 79, the comprehension is so strong.

In fact, writing has always been Wang Yan's shortcoming, although it is not so low as the level of crooked primary school students, but it is definitely not good-looking.

However, as a student with normal aesthetics, Wang Yan knows very well what kind of words are good-looking, and he likes to read them very much.

The reason why Wang Yan has a crush on He Meng is not only because she is beautiful, but also because she was a freshman in high school, and her beautiful and elegant board book was amazing to the boys in the class.

Later, He Meng's academic performance gradually fell, and the eldest lady's temper became more and more popular, but that pen was always the beauty in Wang Yan's memory.

Don't be exaggerating.

When a girl is both beautiful and has some kind of elegant attribute, that kind of lethality is definitely penetrating damage.

Now Wang Yan has no love for He Meng.

However, after suddenly getting the master-level hard pen calligraphy, I couldn't help but think of her and the little feelings I once had.

In a month, my buddy's appearance has soared, his height has skyrocketed, his body is smooth, and even his calligraphy has surpassed you, it's like a dream......

Oh, what a cool dream!

Wang Yan got up, stuffed the first calligraphy work in his life into the shredder, and stretched his waist happily.

I don't know if I am a guest in my dream, how can I be comfortable awake!

Wait a minute......

In poetry, this sentence is inappropriate.

It can be replaced with two other sentences-

I hope that when the song is against the wine, I will see the day of Chang'an flowers!