Question

Write a Java Program to find the sum of the given series:- S=(1*2)+(2*3)......+(19*20)​

Answer 1

Explanation:

• public static void main(String[] args) {
• Scanner scn=new Scanner(System.in);
• int n=scn.nextInt(), sum=0;
• for(int i=1; i<=n; i++) sum+=fact(i);
• System.out.println(sum);
• }

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Answer 2

Answer:

Here's your answer

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