Here is the HTML head of my website .. what I want is that jQuery Validator to work but it is giving me this error in console .. Please guide what is going on
Code:
Uncaught TypeError: Cannot read property 'addMethod' of undefined
    at additional-methods.js:30
    at additional-methods.js:44
    at additional-methods.js:15
    at additional-methods.js:17
contact.html:56 Uncaught TypeError: $(...).validate is not a function
    at HTMLDocument.<anonymous> (contact.html:56)
    at c (jquery.min.js:4)
    at Object.fireWith [as resolveWith] (jquery.min.js:4)
    at Function.ready (jquery.min.js:4)
    at HTMLDocument.q (jquery.min.js:4)



Code:
<!DOCTYPE html>
<html class="no-js">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>Get Assignment Help UK</title>
    <meta name="description" content="">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- Place favicon.ico and apple-touch-icon.png in the root directory -->

    <!-- CSS -->
    <link rel="stylesheet" href="css/owl.carousel.css">
    <link rel="stylesheet" href="css/bootstrap.min.css"><!--Done-->
    <link rel="stylesheet" href="css/font-awesome.min.css">
    <link rel="stylesheet" href="css/style.css">
    <link rel="stylesheet" href="css/ionicons.min.css">
    <link rel="stylesheet" href="css/animate.css">
    <link rel="stylesheet" href="css/responsive.css">

    <!-- Js -->
    <script src="https://code.jquery.com/jquery-3.3.1.js"  integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60=" crossorigin="anonymous"></script>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery-validate/1.17.0/additional-methods.js"></script>
    <script  src="https://code.jquery.com/jquery-3.3.1.min.js"   integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="   crossorigin="anonymous"></script>
    <script type="text/javascript" src="js/jquery.validate.js"></script>  
    <script src="js/vendor/modernizr-2.6.2.min.js"></script>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script>window.jQuery || document.write('<script src="js/vendor/jquery-1.10.2.min.js"><\/script>')</script>
    <script src="js/bootstrap.min.js"></script> <!--Done-->
    <script src="js/owl.carousel.min.js"></script>
    <script src="js/plugins.js"></script>
    <script src="js/min/waypoints.min.js"></script>
    <script src="js/jquery.counterup.js"></script>
    <script type="text/javascript" src="js/jquery.form.js"></script>


    <!-- Google Map -->
    <script src="https://maps.googleapis.com/maps/api/js"></script>
    <script src="js/google-map-init.js"></script>


    <script src="js/main.js"></script>

    <script type="text/javascript">


      $(document).ready(function(){

        $('#reg_form').validate({

          rules:{
            fname:'required'
          },
          messages:{
            required:'Enter Your Name Please'
          }



        });//validate$
      });//Ready$
    </script>

  </head>