http://gradetoppers.com/wp-content/uploads/2022/09/logo-300x75.png00Josephhttp://gradetoppers.com/wp-content/uploads/2022/09/logo-300x75.pngJoseph2023-02-02 06:23:432023-02-02 06:23:43is it a converge or diverge and dose it have a sum or not? 7-21+63-189+