JSFiddle - React, Tailwind, and code Playground

HTML

<button>Generate</button>
<div id="out"></div>

JavaScript

$(function () {
    $('button').click(function () {
        var outOfBoundsChance = .2;
        var num = 0;
        if (Math.random() <= outOfBoundsChance) {
            num = getRandomInt(1, 100);
        } else {
            num = getRandomInt(40, 60);
        }
        $('#out').text(num);
    });
    
    function getRandomInt(min, max) {
        return Math.floor(Math.random() * (max - min + 1)) + min;
    }
});