Which of the following can be operands of arithmetic operators?

Which of the following can be operands of arithmetic operators?

2) What will be the values of x, y and z after execution of the following statements?

int x, y, z;
 x=9;
 y=10;
 z=++x=y++;

3) What is the output of the following program ?

class Numbers{
    public static void main(String args[])
  {
       int a=20, b=10;
       if((a < b) && (b++ < 25))
  {       System.out.println("This is any language logic");
     }
       System.out.println(b);
          }
 }

4) What will be the result of the expression of 8|8.

5) Select from among the following character escape code which is not available in Java.