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If the sum of the digits of a number is divisible by 9, then the number is divisible by 9.

Some examples of numbers divisible by 9 are as follows.

- The number 51984 is divisible by 9 because the sum of its digits (5+ 1 + 9 + 8 + 4 = 27) is divisible by 9.
- The number 91403 is not divisible by 9 because the sum of its digits (9 + 1 + 4 + 0 + 3 = 17) is not divisible by 9.

import java.util.Scanner; public class DivisibleBy9 { public static void main(String args[]) { Scanner sc = new Scanner(System.in); System.out.println("Enter a number :"); String num = sc.nextLine(); int digitSum = 0; for(int i = 0; i<num.length(); i++){ digitSum = digitSum + num.charAt(i)-'0'; } if(digitSum % 9 == 0){ System.out.println("Given number is divisible by 9"); } else { System.out.println("Given number is not divisible by 9"); } } }

Enter a number : 51984 Given number is divisible by 9

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