diff --git a/seed/challenges/08-coding-interview-prep/rosetta-code.json b/seed/challenges/08-coding-interview-prep/rosetta-code.json
index a559187025..4b0773b922 100644
--- a/seed/challenges/08-coding-interview-prep/rosetta-code.json
+++ b/seed/challenges/08-coding-interview-prep/rosetta-code.json
@@ -4367,6 +4367,69 @@
         }
       }
     },
+    {
+      "title": "Gamma function",
+      "description": ["<div class=\"rosetta\"><p class=\"rosetta__paragraph\">Implement one algorithm (or more) to compute the <a class=\"rosetta__link--wiki\" href=\"https://en.wikipedia.org/wiki/Gamma function\" title=\"wp: Gamma function\">Gamma</a> ($\\Gamma$) function (in the real field only).</p><p class=\"rosetta__paragraph\">The Gamma function can be defined as:</p><br/><p class=\"rosetta__paragraph\"><span class=\"rosetta__text--indented\">::::: <big><big> $\\Gamma(x) = \\displaystyle\\int_0^\\infty t^{x-1}e^{-t} dt$</big></big></span></p></div>"],
+      "solutions": [
+        "function gamma(x) {\n  var p = [0.99999999999980993, 676.5203681218851, -1259.1392167224028,\n  771.32342877765313, -176.61502916214059, 12.507343278686905,\n  -0.13857109526572012, 9.9843695780195716e-6, 1.5056327351493116e-7\n  ];\n   \n  var g = 7;\n  if (x < 0.5) {\n    return Math.PI / (Math.sin(Math.PI * x) * gamma(1 - x));\n  }\n\n  x -= 1;\n  var a = p[0];\n  var t = x + g + 0.5;\n  for (var i = 1; i < p.length; i++) {\n  a += p[i] / (x + i);\n  }\n   \n  var result=Math.sqrt(2 * Math.PI) * Math.pow(t, x + 0.5) * Math.exp(-t) * a;\n\n  return result;\n}\n"
+      ],
+      "tests": [
+        {
+          "text": "<code>gamma</code> should be a function.",
+          "testString": "assert(typeof gamma=='function','<code>gamma</code> should be a function.')"
+        },
+        {
+          "text": "<code>gamma('+tests[0]+')</code> should return a number.",
+          "testString": "assert(typeof gamma(tests[0])=='number','<code>gamma('+tests[0]+')</code> should return a number.')"
+        },
+        {
+          "text": "<code>gamma('+tests[0]+')</code> should return <code>'+results[0]+'</code>.",
+          "testString": "assert.equal(gamma(tests[0]),results[0],'<code>gamma('+tests[0]+')</code> should return <code>'+results[0]+'</code>.')"
+        },
+        {
+          "text": "<code>gamma('+tests[1]+')</code> should return <code>'+results[1]+'</code>.",
+          "testString": "assert.equal(gamma(tests[1]),results[1],'<code>gamma('+tests[1]+')</code> should return <code>'+results[1]+'</code>.')"
+        },
+        {
+          "text": "<code>gamma('+tests[2]+')</code> should return <code>'+results[2]+'</code>.",
+          "testString": "assert.equal(gamma(tests[2]),results[2],'<code>gamma('+tests[2]+')</code> should return <code>'+results[2]+'</code>.')"
+        },
+        {
+          "text": "<code>gamma('+tests[3]+')</code> should return <code>'+results[3]+'</code>.",
+          "testString": "assert.equal(gamma(tests[3]),results[3],'<code>gamma('+tests[3]+')</code> should return <code>'+results[3]+'</code>.')"
+        },
+        {
+          "text": "<code>gamma('+tests[4]+')</code> should return <code>'+results[4]+'</code>.",
+          "testString": "assert.equal(gamma(tests[4]),results[4],'<code>gamma('+tests[4]+')</code> should return <code>'+results[4]+'</code>.')"
+        }
+      ],
+      "id": "5a23c84252665b21eecc7e76",
+      "challengeType": "3",
+      "releasedOn": "June 1, 2018",
+      "files": {
+        "indexjs": {
+          "key": "indexjs",
+          "ext": "js",
+          "name": "index",
+          "contents": [
+            "function gaussianElimination (A,b) {",
+            "  // Good luck!",
+            "}"
+          ],
+          "head": [],
+          "tail": [
+            "let tests=[.1,.2,.3,.4,.5];",
+            "let results=[",
+            "  9.513507698668736,",
+            "  4.590843711998803,",
+            "  2.9915689876875904,",
+            "  2.218159543757687,",
+            "  1.7724538509055159",
+            "];"
+          ]
+        }
+      }
+    },
     {
       "title": "Sailors, coconuts and a monkey problem",
       "description": [