What is the Range of Numbers?

1. System.out.println((int)(Math.random()*10));
2. System.out.println((int)(Math.random()*21));
3. System.out.println((int)(Math.random()*101));
4. System.out.println((int)(Math.random()*2));
5. System.out.println((int)(Math.random()*10)-5);
6. System.out.println((int)(Math.random()*10)+1);
7. System.out.println((int)(Math.random()*20)-20);
8. System.out.println((int)(Math.random()*37) - 15);
9. System.out.println((int)(Math.random()*50) + 50);
10. System.out.println((int)(Math.random()*2));
11. System.out.println((int)(Math.random()*2) + 1);