HTMLify

function genNum() {
  $b = Math.floor((Math.random()) * (15 - 1)) + 1;
  $i = Math.floor((Math.random()) * (30 - 16)) + 16;
  $n = Math.floor((Math.random()) * (45 - 31)) + 31;
  $g = Math.floor((Math.random()) * (60 - 46)) + 46;
  $o = Math.floor((Math.random()) * (75 - 61)) + 61;
}

function makeNum() {
  genNum();
  if ($y == 1) $num = $b;
  if ($y == 2) $num = $i;
  if ($y == 3) $num = $n;
  if ($y == 4) $num = $g;
  if ($y == 5) $num = $o;
  $numList.push($num);
  for ($c = 0; $c <= $count; $c++) {
    if ($num != $numList[$c - 1]) {
      $good = 1;
    } else {
      $good = 0;
      makeNum();
    }
  }
}
$('button').click(function() {
  $('.column').empty();
  $numList = [];
  $count = 1;
  for ($x = 1; $x <= 5; $x++) {
    for ($y = 1; $y <= 5; $y++) {
      makeNum();
      if ($good == 1) {
        $('.' + $y).append("<div class='number col-" + $count + "'><span>" + $num + "</span></div>");
      }
      $count++;
    }
  }
  $(".col-13").html("<span>FREE</span>");

  $('.number').click(function() {
    $(this).html('<span>X</span>');
  });
});