Which of these can be returned by the operator & ?

Which of these can be returned by the operator & ?

2) What will be the output after compiling and running following code?

public class Test
  {
      public static void main(String... args)
    { 
         int x =5;
        x *= 3 + 7;
     System.out.println(x);
      }
}

3) Modulus operator, %, can be applied to which of these?

4) If j and k are int type variables, what will be the result of the expression j%k when j=10 and k=3?

5) If int x=15; y=20; what will be the value of x after executing the following statement

 x=(x