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curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-389-platonic-dice.md

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+---
+id: 5900f4f21000cf542c510004
+challengeType: 5
+title: 'Problem 389: Platonic Dice'
+forumTopicId: 302053
+---
+
+## Description
+<section id='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.
+</section>
+
+## Instructions
+<section id='instructions'>
+
+</section>
+
+## Tests
+<section id='tests'>
+
+```yml
+tests:
+  - text: <code>euler389()</code> should return 2406376.3623.
+    testString: assert.strictEqual(euler389(), 2406376.3623);
+
+```
+
+</section>
+
+## Challenge Seed
+<section id='challengeSeed'>
+
+<div id='js-seed'>
+
+```js
+function euler389() {
+
+  return true;
+}
+
+euler389();
+```
+
+</div>
+
+
+
+</section>
+
+## Solution
+<section id='solution'>
+
+```js
+// solution required
+```
+
+</section>