private function get_number_of_questions_to_add_choices() {
        $maxrand = 100;
        $randomcount = array();
        for ($i = 1; $i <= min(10, $maxrand); $i++) {
            $randomcount[$i] = $i;
        }
        for ($i = 20; $i <= min(100, $maxrand); $i += 10) {
            $randomcount[$i] = $i;
        }
        return $randomcount;
    }