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
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 <iostream> #include <math.h> 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 = 4print(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
<?php // PHP program to find the // N-th term of the series: // 0, 10, 30, 60, 99, 150, 210,... // calculate Nth term of series function nthTerm($n) { return 5 * pow($n, 2) - 5 * $n; } // Driver code $N = 4; echo nthTerm($N); // This code is contributed // by inder_verma ?> |
Output:
60
Time Complexity: O(1)
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