<p>I reread the story and it appears to me that I overlooked the fact that Yuriko bet 5 chips on 24 as well.</p>
<p>So suppose the sword is facing up on 24.</p>
<p>According to the rules,</p>
<p>Yumeko gains 30*40=1200 chips, while Yuriko loses 1200 chips.</p>
<p>Yuriko gains 5*30=150 chips, while Yumeko loses 150 chips.</p>
<p>So the chip difference is now (40+1200-150)-(40+150-1200)=2100.</p>
<p>Also there is another rule that states that any chips that &quot;missed target&quot; (外れ) will go to opponent. In this case, since Yuriko already placed 5 chips in 7 other numbers, she must hand over Yumeko 5*7=35 chips.</p>
<p>Now the final chip difference is (40+1200-150+35)-(40+150-1200-35)=2170, which is worth 21億7000万円 as expected.</p>

CC BY-SA 4.0
2024-07-22T20:30:07.383Z
2024-07-22T20:30:07.383Z
John Davies
<p>In Kakegurui manga chapter 3, Yumeko bet all her 40 chips on number 24 and she claimed that if the sword happened to face up on number 24, Yuriko would lose with the total debt of 21億7000万円. How to get this number?</p>
<p>Based on my understanding, both players agreed to bet 40 chips in this round. So if Yumeko is lucky, she would earn 30*40=1200 chips (I assume these chips come from Yuriko's side? If so, she would lose 1200 chips in exchange). The chip difference between these two players would be (40+1200)-(40-1200)=2400. So since each chip is worth 100万円, Yuriko will lose with debt totalling 24億円...</p>
<p>Where did I make a mistake?</p>
<p>I already read <a href="https://anime.stackexchange.com/questions/68302/are-kakegurui-compulsive-gambler-episode-3-calculations-correct">this question</a> but it didn't help much.</p>

CC BY-SA 4.0
2024-07-22T16:51:46.220Z
If you say you answered your question, you could post it as an answer (and I think you can accept it too, but I don’t know if you get rep from that).
DaemonsMercy
CC BY-SA 4.0
2024-09-19T21:45:53.527Z
You are not alone. I’m the one who asked the first question about Kakegurui and accepted the answer for it. But I’m still not convinced how it works. It’s like we bet $10, and you win. I have to pay you $10, and you have to be paid $10. Then, I conclude that I have to pay you $10 + $10 = $20. It doesn’t make sense! Sometimes I read the answer and get convinced, and sometimes not :)
Ali Ent
<compulsive-gambler>
Kakegurui another math help request
# Kakegurui another math help request
Posted by: username_0 on 2024-07-21
In Kakegurui manga chapter 3, Yumeko bet all her 40 chips on number 24 and she claimed that if the sword happened to face up on number 24, Yuriko would lose with the total debt of 21億7000万円. How to get this number?

Based on my understanding, both players agreed to bet 40 chips in this round. So if Yumeko is lucky, she would earn 30\*40=1200 chips (I assume these chips come from Yuriko's side? If so, she would lose 1200 chips in exchange). The chip difference between these two players would be (40+1200)-(40-1200)=2400. So since each chip is worth 100万円, Yuriko will lose with debt totalling 24億円...

Where did I make a mistake?

I already read [this question](https://anime.stackexchange.com/questions/68302/are-kakegurui-compulsive-gambler-episode-3-calculations-correct) but it didn't help much.
**Tags:** compulsive-gambler
> **Comments:**
> **username_1**: If you say you answered your question, you could post it as an answer (and I think you can accept it too, but I don’t know if you get rep from that).  
> **username_2**: You are not alone. I’m the one who asked the first question about Kakegurui and accepted the answer for it. But I’m still not convinced how it works. It’s like we bet $10, and you win. I have to pay you $10, and you have to be paid $10. Then, I conclude that I have to pay you $10 + $10 = $20. It doesn’t make sense! Sometimes I read the answer and get convinced, and sometimes not :)  
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## 1 answers
### Answer by username_0 on 2024-07-22. Score: 1
I reread the story and it appears to me that I overlooked the fact that Yuriko bet 5 chips on 24 as well.

So suppose the sword is facing up on 24.

According to the rules,

Yumeko gains 30\*40=1200 chips, while Yuriko loses 1200 chips.

Yuriko gains 5\*30=150 chips, while Yumeko loses 150 chips.

So the chip difference is now (40+1200-150)-(40+150-1200)=2100.

Also there is another rule that states that any chips that "missed target" (外れ) will go to opponent. In this case, since Yuriko already placed 5 chips in 7 other numbers, she must hand over Yumeko 5\*7=35 chips.

Now the final chip difference is (40+1200-150+35)-(40+150-1200-35)=2170, which is worth 21億7000万円 as expected.
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