{"id":20066,"date":"2022-11-29T13:34:28","date_gmt":"2022-11-29T08:04:28","guid":{"rendered":"https:\/\/btechgeeks.com\/?p=20066"},"modified":"2022-11-30T10:48:36","modified_gmt":"2022-11-30T05:18:36","slug":"python-program-to-find-the-sum-of-series-9-99-999-n","status":"publish","type":"post","link":"https:\/\/btechgeeks.com\/python-program-to-find-the-sum-of-series-9-99-999-n\/","title":{"rendered":"Python Program to Find the Sum of Series 9+99+999&#8230;..+N"},"content":{"rendered":"<p>In the previous article, we have discussed <a href=\"https:\/\/btechgeeks.com\/python-program-to-remove-the-last-word-from-the-string-sentence\/\">Python Program to Remove the last Word from the String\/Sentence<\/a><\/p>\n<p>Given a number N and the task is to find the sum of the given series<strong> (9+99+999&#8230;..+N)<\/strong>\u00a0for the given number in Python.<\/p>\n<p><strong>Examples:<\/strong><\/p>\n<p><strong>Example1:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given Number =6<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The total sum of the series till the given number { 6 } =  1111104<\/pre>\n<ul>\n<li><a href=\"https:\/\/btechgeeks.com\/python-program-to-print-series-6-11-21-36-56-n\/\">Python Program to Print Series 6, 11, 21, 36, 56&#8230;n<\/a><\/li>\n<li><a href=\"https:\/\/btechgeeks.com\/python-program-to-print-series-1-2-6-15-31-n\/\">Python Program to Print Series 1, -2, 6, -15, 31 &#8230; N<\/a><\/li>\n<li><a href=\"https:\/\/btechgeeks.com\/python-program-to-find-sum-of-series-5-2-10-2-15-2-n-2\/\">Python Program to Find Sum of Series 5^2 + 10^2 + 15^2 +&#8230;..N^2<\/a><\/li>\n<\/ul>\n<p><strong>Example2:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given Number =11<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The total sum of the series till the given number { 11 } =  111111111099<\/pre>\n<h2>Program to Find the Sum of Series 9+99+999&#8230;..+N in Python<\/h2>\n<p>Below are the ways to find the sum of the given series<strong> (9+99+999&#8230;..+N)<\/strong> for the given number in Python<\/p>\n<ul>\n<li><a href=\"#Using_For_Loop_(Static_Input)\">Using For Loop (Static Input)<\/a><\/li>\n<li><a href=\"#Using_For_loop_(User_Input)\">Using For loop (User Input)<\/a><\/li>\n<\/ul>\n<h3 id=\"Using_For_Loop_(Static_Input)\">Method #1: Using For Loop (Static Input)<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the number N as static input and store it in a variable.<\/li>\n<li>Take a variable say <strong>resltsum<\/strong> which gives the sum of the given series till N and initialize its value to 0.<\/li>\n<li>Take another variable say <strong>k <\/strong>and initialize its value with 9.<\/li>\n<li>Iterate from 1 to the given number using the for loop.<\/li>\n<li>Inside the loop, add the value of <strong>k<\/strong> to the above-initialized <strong>resltsum <\/strong>and store it in the same variable <strong>resltsum.<\/strong><\/li>\n<li>Calculate the value of <strong>(k*10)+9 <\/strong>and store it in the same variable <strong>k<\/strong>.<\/li>\n<li>Print the <strong>resltsum<\/strong> value which is the result of the series till the given Number N.<\/li>\n<li>The Exit of the Program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Give the number N as static input and store it in a variable.\r\ngvn_numb = 6\r\n# Take a variable say resltsum which gives the sum of the given series till N and\r\n# initialize its value to 0.\r\nresltsum = 0\r\n# Take another variable say k and initialize its value with 9.\r\nk = 9\r\n# Iterate from 1 to the given number using the for loop.\r\nfor itr in range(1, gvn_numb+1):\r\n  # Inside the loop, add the value of k to the above-initialized resltsum and store\r\n  # it in the same variable resltsum.\r\n    resltsum += k\r\n  # Calculate the value of (k*10)+9 and store it in the same variable k.\r\n    k = (k*10)+9\r\n# Print the resltsum value which is the result of the series till the given Number N.\r\nprint(\r\n    \"The total sum of the series till the given number {\", gvn_numb, \"} = \", resltsum)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The total sum of the series till the given number { 6 } =  1111104<\/pre>\n<h3 id=\"Using_For_loop_(User_Input)\">Method #2: Using For loop (User Input)<\/h3>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the number N as user input using the int(input()) function and store it in a variable.<\/li>\n<li>Take a variable say <strong>resltsum<\/strong> which gives the sum of the given series till N and initialize its value to 0.<\/li>\n<li>Take another variable say <strong>k <\/strong>and initialize its value with 9.<\/li>\n<li>Iterate from 1 to the given number using the for loop.<\/li>\n<li>Inside the loop, add the value of <strong>k<\/strong> to the above-initialized <strong>resltsum <\/strong>and store it in the same variable <strong>resltsum.<\/strong><\/li>\n<li>Calculate the value of <strong>(k*10)+9 <\/strong>and store it in the same variable <strong>k<\/strong>.<\/li>\n<li>Print the <strong>resltsum<\/strong> value which is the result of the series till the given Number N.<\/li>\n<li>The Exit of the Program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Give the number N as user input using the int(input()) function and\r\n# store it in a variable.\r\ngvn_numb = int(input(\"Enter some random Number = \"))\r\n# Take a variable say resltsum which gives the sum of the given series till N and\r\n# initialize its value to 0.\r\nresltsum = 0\r\n# Take another variable say k and initialize its value with 9.\r\nk = 9\r\n# Iterate from 1 to the given number using the for loop.\r\nfor itr in range(1, gvn_numb+1):\r\n  # Inside the loop, add the value of k to the above-initialized resltsum and store\r\n  # it in the same variable resltsum.\r\n    resltsum += k\r\n  # Calculate the value of (k*10)+9 and store it in the same variable k.\r\n    k = (k*10)+9\r\n# Print the resltsum value which is the result of the series till the given Number N.\r\nprint(\r\n    \"The total sum of the series till the given number {\", gvn_numb, \"} = \", resltsum)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>Enter some random Number = 11\r\nThe total sum of the series till the given number { 11 } = 111111111099<\/pre>\n<p>The best way to learn Python for Beginners is to practice as much as they can taking help of the <a href=\"https:\/\/btechgeeks.com\/python-programming-examples-with-output\/\">Sample Python Programs For Beginners<\/a>. Using them you can develop code on your own and master coding skills.<\/p>\n<p>Read more: <a href=\"https:\/\/btechgeeks.com\/python-program-to-find-sum-of-series-1-2-3-4-5-n\/\" target=\"_blank\" rel=\"noopener\">Python Program to Find Sum of Series 1-2+3-4+5\u2026+N<\/a><\/p>\n<p><strong>Explore these:<\/strong><\/p>\n<ol>\n<li>9+99+999&#8230;N Terms<\/li>\n<li>Sum Of Series In Python<\/li>\n<li>Sum Of Series Program In Python<\/li>\n<li>9+99+999.<\/li>\n<\/ol>\n<p><strong>Related Posts On:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/btechgeeks.com\/python-program-to-find-sum-of-series-1-1-2-1-2-3-till-n\/\">Python Program to Find Sum of Series (1+(1*2)+(1*2*3)+&#8230;till N)<\/a><\/li>\n<li><a href=\"https:\/\/btechgeeks.com\/python-program-to-find-sum-of-series-1-2-2-3-3-4-4-5-5-6-n-n-1\/\">Python Program to Find Sum of Series 1\/2-2\/3+3\/4-4\/5+5\/6&#8230;+N\/N+1<\/a><\/li>\n<li><a href=\"https:\/\/btechgeeks.com\/python-program-to-find-the-sum-of-series-1-x-x-3-x-n\/\">Python Program to Find the Sum of Series 1+X+X^3&#8230;+X^N<\/a><\/li>\n<li><a href=\"https:\/\/btechgeeks.com\/python-program-to-find-the-sum-of-series-1-x-x2-2-xn-n\/\">Python Program to Find the Sum of Series 1+X+X^2\/2&#8230;+X^N\/N<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In the previous article, we have discussed Python Program to Remove the last Word from the String\/Sentence Given a number N and the task is to find the sum of the given series (9+99+999&#8230;..+N)\u00a0for the given number in Python. Examples: Example1: Input: Given Number =6 Output: The total sum of the series till the given &#8230; <a title=\"Python Program to Find the Sum of Series 9+99+999&#8230;..+N\" class=\"read-more\" href=\"https:\/\/btechgeeks.com\/python-program-to-find-the-sum-of-series-9-99-999-n\/\" aria-label=\"More on Python Program to Find the Sum of Series 9+99+999&#8230;..+N\">Read more<\/a><\/p>\n","protected":false},"author":7,"featured_media":20107,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python Program to Find the Sum of Series 9+99+999.....+N - BTech Geeks<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/btechgeeks.com\/python-program-to-find-the-sum-of-series-9-99-999-n\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python Program to Find the Sum of Series 9+99+999.....+N - BTech Geeks\" \/>\n<meta property=\"og:description\" content=\"In the previous article, we have discussed Python Program to Remove the last Word from the String\/Sentence Given a number N and the task is to find the sum of the given series (9+99+999&#8230;..+N)\u00a0for the given number in Python. 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Examples: Example1: Input: Given Number =6 Output: The total sum of the series till the given ... 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