- Trending Categories
- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP

- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who

In this problem, we are given a number N. Our task is to create a Program to find N-th term of series 3, 6, 18, 24, … in C++.

**Problem Description** − To find the Nth term of the series −

**3, 6, 18, 24, 45, 54, 84 … N Terms**

We need to find the general formula for the given series.

**Input** − N = 10

**Output** − 150

To find the general term of the series, we will first observe the series and check all the possible generalizations of the series. Like, 3 is common in all but as you go-ahead, you will find that it will not provide any result.

Here, we can also take out the term n i.e. 1, 2, 3. From their values in series to give it a new form. Further checking the remaining value, we will get the following general formula.

T_{n}= (n*((n/2) + ((n%2) *2) + 5))

#include <iostream> using namespace std; int findNTerm(int N) { int nthTerm = ( N*((N/2)+ ((N%2)*2) + N) ); return nthTerm; } int main() { int N = 7; cout<<N<<"th term of the series is "<<findNTerm(N); return 0; }

7th term of the series is 84

- Related Questions & Answers
- C++ program to find n-th term of series 1, 3, 6, 10, 15, 21…
- C++ program to find Nth term of the series 1, 6, 18, 40, 75, ….
- Program to find N-th term of series 0, 0, 2, 1, 4, 2, 6, 3, 8…in C++
- C++ program to find n-th term of series 3, 9, 21, 41, 71…
- C++ program to Find Nth term of the series 1, 1, 2, 6, 24…
- Program to find N-th term of series 3, 5, 33, 35, 53… in C++
- Program to find N-th term of series 2, 4, 3, 4, 15… in C++
- Program to find N-th term of series 3 , 5 , 21 , 51 , 95 , … in C++
- Program to find N-th term of series 3, 12, 29, 54, 87, … in C++
- Program to find N-th term of series 1, 6, 17, 34, 56, 86, 121, 162, …in C++
- Program to find N-th term of series 3, 12, 29, 54, 86, 128, 177, 234, ….. in C++
- C++ program to find n-th term in the series 7, 15, 32, …
- C++ program to find n-th term in the series 9, 33, 73,129 …
- C++ program to find n-th term of series 2, 10, 30, 68, 130 …
- n-th term of series 1, 17, 98, 354…… in C++

Advertisements