{"id":16451,"date":"2026-04-30T02:50:44","date_gmt":"2026-04-29T20:50:44","guid":{"rendered":"https:\/\/mcqacademy.com\/en\/mcq\/even-or-odd-after-operations\/"},"modified":"2026-04-30T02:50:44","modified_gmt":"2026-04-29T20:50:44","slug":"even-or-odd-after-operations","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/en\/mcq\/even-or-odd-after-operations\/","title":{"rendered":"Even Or Odd After Operations"},"content":{"rendered":"<p>If a and b are odd integers, which of the following expressions must be even? Choose all that apply.<\/p>\n\n<ul class=\"quiz-options wp-block-list\">\n<li>a + b<\/li>\n<li>a \u00d7 b<\/li>\n<li>a^2 + b^2<\/li>\n<li>a + b + 1<\/li>\n<\/ul>\n","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","topic":[2489,2648],"subject":[1425],"education_level":[1894,1895],"class_list":["post-16451","mcq","type-mcq","status-publish","hentry","topic-arithmetic-number-system","topic-parity-and-operations","subject-mathematics","education_level-grade-8","education_level-ssc"],"mcq_note":"Odd + odd = even, so a + b is even; odd \u00d7 odd = odd so not even; squares of odd numbers are odd and odd + odd = even, so a^2 + b^2 is even; a + b + 1 is even + 1 = odd.","mcq_options":[{"right":"yes","answer":"a + b"},{"right":"no","answer":"a \u00d7 b"},{"right":"yes","answer":"a^2 + b^2"},{"right":"no","answer":"a + b + 1"}],"multi_answers":"yes","subject_terms":[{"id":1425,"title":"Mathematics","slug":"mathematics"}],"topic_terms":[{"id":2489,"title":"Arithmetic &amp; Number System","slug":"arithmetic-number-system"},{"id":2648,"title":"Parity And Operations","slug":"parity-and-operations"}],"_links":{"self":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/mcq\/16451","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/mcq"}],"about":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/types\/mcq"}],"author":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/comments?post=16451"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/media?parent=16451"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/topic?post=16451"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/subject?post=16451"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/education_level?post=16451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}