Задание 62.html

 <!DOCTYPE html>
 <html lang="en">
 <head>
   <meta charset="UTF-8">
   <title>Задание 62.</title>
   <script
   src="https://code.jquery.com/jquery-3.3.1.js"
   integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60="
   crossorigin="anonymous"></script>
 </head>
 <body>

  <select name="radio1" id="select1">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
    <option value="4">4</option>
    <option value="5">5</option>
  </select>

  <input type="radio" name="forSel" value="1">
  <input type="radio" name="forSel" value="2">
  <input type="radio" name="forSel" value="3">
  <input type="radio" name="forSel" value="4">
  <input type="radio" name="forSel" value="5">

  <script type="text/javascript">
    $('#select1').on('change',function(){
      $(':radio[value='+$(this).val()+']').prop('checked',true);
    });
  </script>
</body>
</html>