17.

What is the sum of roll1 and roll2 after the following code is executed?

var roll1=0; var roll2=0;

while ( roll1+roll2!=6 ) {

roll1=Math.floor(Math.random( )*6+1);

roll2=Math.floor(Math.random( )*6+1);

}

18.

What is the value of newStr after the following code segment is executed?

var str ="abc";

var letter = str.charAt(0); var rest = str.substring(1, str.length); var newStr = letter;

letter =rest.charAt(0); rest = rest.substring(1, str.length); newStr = rest + letter + newStr;

19.

What is the value of variable num after the following code segment?

var num = 10;

while ( num > 0 ) {

num = num -1;

}

20.

What is the value of variable num after the following code segment is executed?

var num = 1;

while ( num >10 ) {

num = num -1;

}