{"id":2407,"date":"2026-05-18T20:12:27","date_gmt":"2026-05-18T20:12:27","guid":{"rendered":"https:\/\/mcqacademy.com\/zh\/mcq\/geometric-progression-calculation-15\/"},"modified":"2026-05-18T20:12:27","modified_gmt":"2026-05-18T20:12:27","slug":"geometric-progression-calculation-15","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/zh\/mcq\/geometric-progression-calculation-15\/","title":{"rendered":"\u7b49\u6bd4\u6570\u5217\u8ba1\u7b97 15"},"content":{"rendered":"<p>\u5bf9\u4e8e\u4e00\u4e2a\u9996\u9879\u4e3a 4\u3001\u516c\u6bd4\u4e3a -2 \u7684\u7b49\u6bd4\u6570\u5217\uff0c\u6c42\u7b2c 9 \u9879\u3002<\/p>\n\n<ul class=\"quiz-options wp-block-list\">\n<li>1025<\/li>\n<li>2048<\/li>\n<li>-1024<\/li>\n<li>1024<\/li>\n<\/ul>\n","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","topic":[1079,1007],"subject":[1080],"education_level":[5],"class_list":["post-2407","mcq","type-mcq","status-publish","hentry","topic-algebra","topic-sequences-and-series","subject-algebra","education_level-hsc"],"mcq_note":"\u5bf9\u4e8e\u7b49\u6bd4\u6570\u5217\uff0c\u7b2c n \u9879\u7b49\u4e8e\u9996\u9879\u4e58\u4ee5\u516c\u6bd4\u7684 (n-1) \u6b21\u65b9\u3002\u8fd9\u662f\u56e0\u4e3a\u9996\u9879\u672c\u8eab\u5df2\u7ecf\u662f\u7b2c 1 \u9879\u3002\u7b2c n \u9879\u516c\u5f0f\u662f a r^(n-1)\u3002\u56e0\u6b64 T_9=4(-2)^(9-1)=1024\u3002\u6240\u4ee5\uff0c\u4ee3\u5165 a\u3001r \u548c n \u540e\uff0c\u5c31\u80fd\u5f97\u5230\u6240\u6c42\u9879\u3002","mcq_options":[{"right":"no","answer":"1025"},{"right":"no","answer":"2048"},{"right":"no","answer":"-1024"},{"right":"yes","answer":"1024"}],"multi_answers":"no","subject_terms":[{"id":1080,"title":"Algebra","slug":"algebra"}],"topic_terms":[{"id":1079,"title":"Algebra","slug":"algebra"},{"id":1007,"title":"\u6570\u5217\u4e0e\u7ea7\u6570","slug":"sequences-and-series"}],"_links":{"self":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/mcq\/2407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/mcq"}],"about":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/types\/mcq"}],"author":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/comments?post=2407"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/media?parent=2407"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/topic?post=2407"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/subject?post=2407"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/education_level?post=2407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}