{"id":16379,"date":"2026-04-29T21:13:52","date_gmt":"2026-04-29T15:13:52","guid":{"rendered":"https:\/\/mcqacademy.com\/en\/mcq\/greatest-common-divisor-6\/"},"modified":"2026-04-29T21:13:52","modified_gmt":"2026-04-29T15:13:52","slug":"greatest-common-divisor-6","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/en\/mcq\/greatest-common-divisor-6\/","title":{"rendered":"Greatest Common Divisor"},"content":{"rendered":"<p>Find the greatest common divisor (GCD) of 84 and 126.<\/p>\n\n<ul class=\"quiz-options wp-block-list\">\n<li>14<\/li>\n<li>21<\/li>\n<li>42<\/li>\n<li>63<\/li>\n<\/ul>\n","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","topic":[2489,2556,2513],"subject":[1425],"education_level":[1894,1895],"class_list":["post-16379","mcq","type-mcq","status-publish","hentry","topic-arithmetic-number-system","topic-gcd","topic-lcm-and-hcf","subject-mathematics","education_level-grade-8","education_level-ssc"],"mcq_note":"Prime factors: 84 = 2^2\u00d73\u00d77, 126 = 2\u00d73^2\u00d77; common factors take min powers: 2^1\u00d73^1\u00d77^1 = 42, so GCD is 42.","mcq_options":[{"right":"no","answer":"14"},{"right":"no","answer":"21"},{"right":"yes","answer":"42"},{"right":"no","answer":"63"}],"multi_answers":"no","subject_terms":[{"id":1425,"title":"Mathematics","slug":"mathematics"}],"topic_terms":[{"id":2489,"title":"Arithmetic &amp; Number System","slug":"arithmetic-number-system"},{"id":2556,"title":"GCD","slug":"gcd"},{"id":2513,"title":"LCM and HCF","slug":"lcm-and-hcf"}],"_links":{"self":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/mcq\/16379","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=16379"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/media?parent=16379"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/topic?post=16379"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/subject?post=16379"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/en\/wp-json\/wp\/v2\/education_level?post=16379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}