sub.java

import java.util.Scanner;public class Sub {/** * @param args */public static void main(String[] args) {int number1=(int)(Math.random()*10);int number2=(int)(Math.random()*10);if(number1<number2){int temp=number1;number1=number2;number2=temp;}System.out.print("what is "+number1+"-"+number2+"?");Scanner input=new Scanner (System.in);int answer =input.nextInt();if(number1-number2==answer)System.out.println("You are correct!");else System.out.println("YOU answer is wrong\n"+number1+"-"+number2+"should be"+(number1-number2));// TODO Auto-generated method stub}}