<p>36 = 1, 108 = 3, 2160 = 2, 10800 = X.</p>
<p>Possible formula:-
First set patern
36 = 1
108 = 3 [ 108/36 =3 ]</p>
<p>Second set with similar patern
2160 = 2
10800 = X [ 10800/2160 =5 ]</p>
<p>X=5</p>
<p>There are few possibility of formulas, but the simplest is the above which meet the patern requirement. It does not matter if 2160 = &quot;?&quot; just follow the first set patern &quot;108/36 =3&quot; which will lead to &quot;10800/2160&quot; and you get the answer X=5.</p>

CC BY-SA 4.0
2022-02-05T05:07:23.267Z
While it may be another valid thought process, it's unlikely that "2160 = 2" has no meaning...
Aki Tanaka
CC BY-SA 4.0
2022-02-05T02:10:30.750Z
2022-02-05T02:10:30.750Z
PT Elizah
<p>While there are probably many possible answers, the most common answer is</p>

<blockquote class="spoiler">
  <p> <strong>10800 = 5</strong>, or <strong>X = 5</strong>.</p>
</blockquote>

<p>Hints:</p>

<ol>
<li><blockquote class="spoiler">
  <p> "0" is 1,"1" is 0, etc. (the puzzle usually avoids "4" because it's ambiguous)</p>
</blockquote></li>
<li><blockquote class="spoiler">
  <p> Count the loop on each digit.</p>
</blockquote></li>
<li><blockquote class="spoiler">
  <p> Only "0", "6", "8" and "9" have loop(s) on their digits.</p>
</blockquote></li>
</ol>

<p>Solution:</p>

<blockquote class="spoiler">
  <p> "10800" has 5 loops; 3 from "0" and 2 from "8", thus X = 5.</p>
</blockquote>

CC BY-SA 4.0
2018-05-10T06:55:59.617Z
Related question on [math.se]: [Puzzling Sequence](https://math.stackexchange.com/q/1075450)
Aki Tanaka
CC BY-SA 4.0
2018-05-10T06:53:59.417Z
2018-05-10T06:53:59.417Z
Aki Tanaka
<p>In volume 8 of <em>In Another World With My Smartphone</em>, Touya (the MC) encounters ruins containing riddles. Whilst the novel explains the questions and answers to most of them, one of them has me confused:</p>

<blockquote>
  <p>"Please follow the rules of the current calculation. In this system, what does X equal?" 36 = 1, 108 = 3, 2160 = 2, 10800 = X.</p>
</blockquote>

<p>Touya claims the answer was straightforward and proceeds. But, whilst it may have been straightforward to him, I don't get it. If required, I can supply the answer he gives, but, I didn't want to spoil it.</p>

CC BY-SA 4.0
2018-05-10T06:29:45.977Z
I suggest checking out https://puzzling.stackexchange.com/ site for puzzles and riddles like this one. Even if it comes from anime, I don't think this is the best place to ask, and not being able to find "riddle" tags is an indication of that :p Also, perhaps include some screenshots or pictures if you can and if it you think it would help.
Hakase
<in-another-world-with-my-smartphone>
"10800 = X" riddle
# "10800 = X" riddle
Posted by: username_0 on 2018-05-10
In volume 8 of *In Another World With My Smartphone*, Touya (the MC) encounters ruins containing riddles. Whilst the novel explains the questions and answers to most of them, one of them has me confused:

> "Please follow the rules of the current calculation. In this system, what does X equal?" 36 = 1, 108 = 3, 2160 = 2, 10800 = X.

Touya claims the answer was straightforward and proceeds. But, whilst it may have been straightforward to him, I don't get it. If required, I can supply the answer he gives, but, I didn't want to spoil it.
**Tags:** in-another-world-with-my-smartphone
> **Comments:**
> **username_1**: I suggest checking out https://puzzling.stackexchange.com/ site for puzzles and riddles like this one. Even if it comes from anime, I don't think this is the best place to ask, and not being able to find "riddle" tags is an indication of that :p Also, perhaps include some screenshots or pictures if you can and if it you think it would help.  
---
## 2 answers
### Answer by username_3 on 2018-05-10. Score: 6 | Accepted answer
While there are probably many possible answers, the most common answer is

> **10800 = 5**, or **X = 5**.

Hints:

1. > "0" is 1,"1" is 0, etc. (the puzzle usually avoids "4" because it's ambiguous)
2. > Count the loop on each digit.
3. > Only "0", "6", "8" and "9" have loop(s) on their digits.

Solution:

> "10800" has 5 loops; 3 from "0" and 2 from "8", thus X = 5.
> **Comments:**
> **username_3** (2018-05-10): Related question on [math.se]: [Puzzling Sequence](https://math.stackexchange.com/q/1075450)  
---
### Answer by username_2 on 2022-02-05. Score: 0
36 = 1, 108 = 3, 2160 = 2, 10800 = X.

Possible formula:-
First set patern
36 = 1
108 = 3 [ 108/36 =3 ]

Second set with similar patern
2160 = 2
10800 = X [ 10800/2160 =5 ]

X=5

There are few possibility of formulas, but the simplest is the above which meet the patern requirement. It does not matter if 2160 = "?" just follow the first set patern "108/36 =3" which will lead to "10800/2160" and you get the answer X=5.
> **Comments:**
> **username_3** (2022-02-05): While it may be another valid thought process, it's unlikely that "2160 = 2" has no meaning...  
---
