java programming

three questions

1) while statement that prints out (39, 36, 33, 30,27, 24, 21, 18,15,12, 9, 6

2) method called percentEven that accepts 2 dimensional arrays of interger

example if array store [6,2,9,11,3] should return 40.0

3) public static void if EkseMystery (int a, int b)

if(a*2

a=a*3;

}

else if (a>b){

b=b+3

}

if (b

b++;

}else{

a--:

system.out.println(a+"\\" +b);

i need the out put