Including More Than One jQuery Versions

Trying to load these 3 with no conflict. But, there still is a conflict.

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" type="text/javascript"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>

<script>
var $j = jQuery.noConflict();
$j(function() {
$j( "#selector" ).click(function() {
alert("hello");
});
});
</script> 

Solution:

Use jQuery.noConflict();

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" type="text/javascript"></script>
<script>
    var $i = jQuery.noConflict();
    alert($i.fn.jquery);
</script> 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
    var $j = jQuery.noConflict();
    alert($j.fn.jquery);
</script> 
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script>
    var $k = jQuery.noConflict();
    alert($k.fn.jquery);
</script> 

DEMO