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* fix: remove isHidden flag from frontmatter * fix: add isUpcomingChange Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com> * feat: hide blocks not challenges Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com> Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com>
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id, challengeType, title, forumTopicId
| id | challengeType | title | forumTopicId |
|---|---|---|---|
| 5900f45c1000cf542c50ff6e | 5 | Problem 239: Twenty-two Foolish Primes | 301884 |
Description
What is the probability that we have a partial derangement such that exactly 22 prime number discs are found away from their natural positions? (Any number of non-prime disks may also be found in or out of their natural positions.)
Give your answer rounded to 12 places behind the decimal point in the form 0.abcdefghijkl.
Instructions
Tests
tests:
- text: <code>euler239()</code> should return 0.001887854841.
testString: assert.strictEqual(euler239(), 0.001887854841);
Challenge Seed
function euler239() {
// Good luck!
return true;
}
euler239();
Solution
// solution required