diff --git a/seed/challenges/08-coding-interview-questions-and-take-home-assignments/project-euler-problems.json b/seed/challenges/08-coding-interview-questions-and-take-home-assignments/project-euler-problems.json
index 31e6bd15430..656c90bd575 100644
--- a/seed/challenges/08-coding-interview-questions-and-take-home-assignments/project-euler-problems.json
+++ b/seed/challenges/08-coding-interview-questions-and-take-home-assignments/project-euler-problems.json
@@ -1604,36 +1604,24 @@
"type": "bonfire",
"title": "Problem 45: Triangular, pentagonal, and hexagonal",
"tests": [
- "assert.strictEqual(euler45(), 1533776805, 'message: euler45()
should return 1533776805.');"
+ "assert.strictEqual(triPentaHexa(40756), 1533776805, 'message: triPentaHexa(40756)
should return 1533776805.');"
],
- "solutions": [],
+ "solutions": ["function triPentaHexa(n) {\n function triangular(num) {\n return (num * (num + 1)) / 2;\n}\n\nfunction isPentagonal(num) {\n // Formula found by completing the square and\n // solving for n.\n const n = (Math.sqrt((24 * num) + 1) + 1) / 6;\n return n % 1 === 0;\n}\n\n function isHexagonal(num) {\n // Formula found by completing the square and\n // solving for n.\n const n = Math.sqrt(0.5 * (num + (1 / 8))) + 0.25;\n return n % 1 === 0;\n}\n\nlet iTri = n;\nlet tri;\nlet found = false;\nwhile (!found) {\n iTri++;\n tri = triangular(iTri);\n if (isPentagonal(tri) && isHexagonal(tri)) {\n found = true;\n }\n }\n return tri;\n}"],
"translations": {},
"challengeSeed": [
- "function euler45() {",
+ "function triPentaHexa(n) {",
" // Good luck!",
" return true;",
"}",
"",
- "euler45();"
+ "triPentaHexa(40756);"
],
"description": [
"Triangle, pentagonal, and hexagonal numbers are generated by the following formulae:",
- "Triangle",
- "",
- "Tn=n(n+1)/2",
- "",
- "1, 3, 6, 10, 15, ...",
- "Pentagonal",
- "",
- "Pn=n(3nā1)/2",
- "",
- "1, 5, 12, 22, 35, ...",
- "Hexagonal",
- "",
- "Hn=n(2nā1)",
- "",
- "1, 6, 15, 28, 45, ...",
- "It can be verified that T285 = P165 = H143 = 40755.",
+ "