Consider the following code snippet :

var string2Num=parseInt("123xyz

Consider the following code snippet :

var string2Num=parseInt("123xyz");

2) Consider the following code snippet :

var tensquared = (function(x)
 {
return x*x;
}
(10));

3) Consider the following code snippet :

 var grand_Total=eval("10*10+5");

4) Consider the following code snippet

function hypotenuse(a, b)
  {
        function square(x)
         {
              return x*x;
         }
        return Math.sqrt(square(a) + square(b));
 }

5) What is the purpose of a return statement in a function?