Factorial Series in Java
Question : Write a program to print the following series.
S = 2! + (2! + 3!) - (2! + 3! + 5!) + (2! + 3! + 5! + 7!)......... n terms
The above series is very easy to solve
Logic :-
First input number of terms
The nth term will contain 'n' number of terms (ex- if n = 2, then it will contain 2 terms i.e. (2! + 3!))
calculate the nth term by first finding the first 'n' number of prime numbers
Now, calculate factorial of each prime number
Add the factorials of all the prime numbers
Now if the nth term is odd and not the first then it will be a negative term
else it will be a positive term
Store the result in the variable accordingly
Print the result
Note : To understand the program clearly watch this video : https://youtu.be/CRX9zDJYY4U
Program to print the Series :-
Checkout Source Code : Click here
Program Video : Watch Now