Load a stylesheet or Scripts on specific admin pages

functions.php

<?php
function load_custom_wp_admin_style() {
    $pageArr = array(1, 2, 3);
    if(isset($_GET['post']) && in_array($_GET['post'], $pageArr)){
        wp_register_style( 'custom_wp_admin_css', get_template_directory_uri() . '/admin-style.css', false, '1.0.0' );
        wp_enqueue_style( 'custom_wp_admin_css' );
    }
}
add_action( 'admin_enqueue_scripts', 'load_custom_wp_admin_style' );