I am using this code to pop-up a modal:
<script src="https://code.jquery.com/jquery-1.10.1.min.js"></script>
<script type="text/javascript" src="/bootstrap.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("#btn").click(function(){
$('#myModal').modal('show');
});
</script>
and also
<script src="https://code.jquery.com/jquery-1.4.4.1.min.js"></script>
loaded on same page without conflict.