Add random numbers guide

content/guides.json

@@ -1,4 +1,14 @@
 [
+  {
+    "title": "Random Numbers: Are they?",
+    "description": "Learn how they are generated and why they may not be truly random.",
+    "url": "/guides/random-numbers",
+    "fileName": "random-numbers",
+    "featured": true,
+    "author": "kamranahmedse",
+    "updatedAt": "2020-03-15T15:48:21.191Z",
+    "createdAt": "2020-03-15T15:48:21.191Z"
+  },
   {
     "title": "Big-O Notation",
     "description": "Easy to understand explanation of Big-O notation without any fancy terms",

content/guides/random-numbers.md

@@ -0,0 +1,3 @@
+Random numbers are everywhere from computer games to lottery systems, graphics software, statistical sampling, computer simulation and cryptography. Graphic below is a quick explanation to how the random numbers are generated and why they may not be truly random. 
+
+![](/guides/random-numbers.png)

public/sitemap.xml

@@ -30,6 +30,12 @@
               <lastmod>2020-01-29T07:49:29.706Z</lastmod>
               <priority>1.0</priority>
           </url>
+<url>
+              <loc>https://roadmap.sh/guides/random-numbers</loc>
+              <changefreq>monthly</changefreq>
+              <lastmod>2020-03-15T15:48:21.191Z</lastmod>
+              <priority>1.0</priority>
+          </url>
 <url>
               <loc>https://roadmap.sh/guides/big-o-notation</loc>
               <changefreq>monthly</changefreq>