Set the variables to different values and different operators and then try...

 different values and different operators


<html>
   <body>
 
      <script type="text/javascript">
         <!--
            var a = 10;
            var b = 20;
            var linebreak = "<br />";
     
            document.write("(a && b) => ");
            result = (a && b);
            document.write(result);
            document.write(linebreak);
       
            document.write("(a || b) => ");
            result = (a || b);
            document.write(result);
            document.write(linebreak);
       
            document.write("!(a && b) => ");
            result = (!(a && b));
            document.write(result);
            document.write(linebreak);
         //-->
      </script>
     
      <p>Set the variables to different values and different operators and then try...</p>
   </body>
</html>

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