Can this work?

Hello. I have a form in HTML/PHP with for loops that generate a selected
list like this:
for($i = 1; $i< 25;$i++ ){
 <option value="<?php echo "$i"; ?><?php echo "$i"; ?></option>
}

The lists look like this:

<form action="index.php
<view-source:http://localhost/%7Ekarl/kasen/io/kp/index.php>"
method="post"><select name="valgt_dynamit_polse_1-25kg"><option
value="1-25" selected="selected">1-25</option><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><option value="6">6</option><option
value="7">7</option><option value="8">8</option><option
value="9">9</option><option value="10">10</option><option
value="11">11</option><option value="12">12</option><option
value="13">13</option><option value="14">14</option><option
value="15">15</option><option value="16">16</option><option
value="17">17</option><option value="18">18</option><option
value="19">19</option><option value="20">20</option><option
value="21">21</option><option value="22">22</option><option
value="23">23</option><option value="24">24</option><option
value="25">25</option></select> Kg&nbsp;<select
name="valgt_dynamit_polse_26-50kg"><option value="26-50"
selected="selected">26-50</option><option
value="26">26</option><option value="27">27</option><option
value="28">28</option><option value="29">29</option><option
value="30">30</option><option value="31">31</option><option
value="32">32</option><option value="33">33</option><option
value="34">34</option><option value="35">35</option><option
value="36">36</option><option value="37">37</option><option
value="38">38</option><option value="39">39</option><option
value="40">40</option><option value="41">41</option><option
value="42">42</option><option value="43">43</option><option
value="44">44</option><option value="45">45</option><option
value="46">46</option><option value="47">47</option><option
value="48">48</option><option value="49">49</option><option
value="50">50</option></select> Kg&nbsp;

What I try to do with it is to register the selected value and do something
with it. The lists is weight in KG. I hope to select only one value between
1-25kg OR 26-50kg. I don't know if this is possible? What do you think?

Thanks.
Karl