JSFiddle - React, Tailwind, and code Playground

HTML

<select id="one">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>

<select id="two">>
<option>2</option>
<option>4</option>
<option>6</option>
<option>8</option>
</select>

JavaScript

document.getElementById("one").onchange = function( ){
    var selectedOption = this.options[this.selectedIndex].text;
    
    var option = getElementByText(document.getElementById("two"), selectedOption * 2);
    option.style.display = "none";
}

function getElementByText(parent, text) {
    for (var i = 0; i < parent.children.length; i ++) {
        if (parent.children[i].text == text) {
            return parent.children[i];
        }
    }
    return false;
}