ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
41 lines
946 B
Markdown
41 lines
946 B
Markdown
---
|
|
id: 5900f4f21000cf542c510004
|
|
title: 'Problem 389: Platonic Dice'
|
|
challengeType: 5
|
|
forumTopicId: 302053
|
|
dashedName: problem-389-platonic-dice
|
|
---
|
|
|
|
# --description--
|
|
|
|
An unbiased single 4-sided die is thrown and its value, T, is noted.T unbiased 6-sided dice are thrown and their scores are added together. The sum, C, is noted.C unbiased 8-sided dice are thrown and their scores are added together. The sum, O, is noted.O unbiased 12-sided dice are thrown and their scores are added together. The sum, D, is noted.D unbiased 20-sided dice are thrown and their scores are added together. The sum, I, is noted.
|
|
|
|
Find the variance of I, and give your answer rounded to 4 decimal places.
|
|
|
|
# --hints--
|
|
|
|
`euler389()` should return 2406376.3623.
|
|
|
|
```js
|
|
assert.strictEqual(euler389(), 2406376.3623);
|
|
```
|
|
|
|
# --seed--
|
|
|
|
## --seed-contents--
|
|
|
|
```js
|
|
function euler389() {
|
|
|
|
return true;
|
|
}
|
|
|
|
euler389();
|
|
```
|
|
|
|
# --solutions--
|
|
|
|
```js
|
|
// solution required
|
|
```
|