# Program to find Nth term of series 0, 10, 30, 60, 99, 150, 210, 280………..

Given a number N. The task is to write a program to find the Nth term of the below series:

0, 10, 30, 60, 99, 150, 210, 280…..(N Terms)

Examples:

Input: N = 4
Output: 60
For N = 4
4th Term = ( 5 * 4 * 4 - 5 * 4)
= 60

Input: N = 10
Output: 449

## Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Approach: The generalized Nth term of this series:

Below is the required implementation:

## C++

 // C++ program to find the N-th term of the series: // 0, 10, 30, 60, 99, 150, 210, ..... #include #include using namespace std;    // calculate Nth term of series int nthTerm(int n) {     return 5 * pow(n, 2) - 5 * n; }    // Driver code int main() {     int N = 4;        cout << nthTerm(N) << endl;        return 0; }

## Java

 // Java program to find the N-th term of the series: // 0, 10, 30, 60, 99, 150, 210, ..... import java.util.*;    class solution {    // calculate Nth term of series static int nthTerm(int n) {     return 5 * (int)Math.pow(n, 2) - 5 * n; }    //Driver code public static void main(String arr[]) {          int N = 4;      System.out.println(nthTerm(N) );    } }    //This code is contributed by Surendra_Gangwar

## Python3

 # Python3 program to find the # N-th term of the series: # 0, 10, 30, 60, 99, 150, 210, .....    # calculate Nth term of series def nthTerm(n):        return 5 * pow(n, 2) - 5 * n    # Driver code N = 4 print(nthTerm(N))    # This code is contributed by # Sanjit_Prasad

## C#

 // C# program to find the // N-th term of the series: // 0, 10, 30, 60, 99, 150, 210, ..... using System;     class GFG {    // calculate Nth term of series static int nthTerm(int n) {     return 5 * (int)Math.Pow(n, 2) - 5 * n; }    // Driver code public static void Main() {     int N = 4;     Console.Write(nthTerm(N)); } }    // This code is contributed // by ChitraNayal

## PHP



Output:

60

Time Complexity: O(1)

My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.