{"id":89800,"date":"2025-06-01T10:12:55","date_gmt":"2025-06-01T10:12:55","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=89800"},"modified":"2025-06-01T10:12:55","modified_gmt":"2025-06-01T10:12:55","slug":"the-right-letters-for-question-marks-in-the-following-series-are","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/","title":{"rendered":"The right letters for question marks (?) in the following series are :"},"content":{"rendered":"<p>The right letters for question marks (?) in the following series are : A C B E C G D ? ?<\/p>\n<p>[amp_mcq option1=&#8221;M N&#8221; option2=&#8221;L E&#8221; option3=&#8221;G H&#8221; option4=&#8221;I E&#8221; correct=&#8221;option4&#8243;]<\/p>\n<div class=\"psc-box-pyq-exam-year-detail\">\n<div class=\"pyq-exam\">\n<div class=\"psc-heading\">This question was previously asked in<\/div>\n<div class=\"psc-title line-ellipsis\">UPSC CAPF &#8211; 2014<\/div>\n<\/div>\n<div class=\"pyq-exam-psc-buttons\"><a href=\"\/pyq\/pyq-upsc-capf-2014.pdf\" target=\"_blank\" class=\"psc-pdf-button\" rel=\"noopener\">Download PDF<\/a><a href=\"\/pyq-upsc-capf-2014\" target=\"_blank\" class=\"psc-attempt-button\" rel=\"noopener\">Attempt Online<\/a><\/div>\n<\/div>\n<section id=\"pyq-correct-answer\">\nThe series A C B E C G D follows a pattern where letters alternate between two sequences. The next two letters are I and E.<br \/>\n<\/section>\n<section id=\"pyq-key-points\">\nThe series is A C B E C G D ? ?<br \/>\nObserve the letters at odd positions (1st, 3rd, 5th, 7th, 9th): A, B, C, D, ?<br \/>\nThis is a simple alphabetical sequence starting from A (1st letter of the alphabet), incrementing by one letter each time. The 9th letter in the overall series is at the 5th odd position, so it should be the 5th letter of the alphabet, which is E.<\/p>\n<p>Observe the letters at even positions (2nd, 4th, 6th, 8th): C, E, G, ?<br \/>\nThis is a sequence starting from C (3rd letter), incrementing by two letters each time (C+2=E, E+2=G). The 8th letter in the overall series is at the 4th even position. The sequence is C(3), E(5), G(7), I(9). The 4th letter in this sequence is I.<\/p>\n<p>Combining these, the 8th letter is I and the 9th letter is E. The series continues as A C B E C G D I E.<br \/>\n<\/section>\n<section id=\"pyq-additional-information\">\nLetter series questions often hide multiple patterns within a single sequence. It is useful to examine positions, differences between consecutive letters, or alternating subsequences. Converting letters to their numerical position in the alphabet can help identify arithmetic patterns.<br \/>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>The right letters for question marks (?) in the following series are : A C B E C G D ? ? [amp_mcq option1=&#8221;M N&#8221; option2=&#8221;L E&#8221; option3=&#8221;G H&#8221; option4=&#8221;I E&#8221; correct=&#8221;option4&#8243;] This question was previously asked in UPSC CAPF &#8211; 2014 Download PDFAttempt Online The series A C B E C G D follows &#8230; <\/p>\n<p class=\"read-more-container\"><a title=\"The right letters for question marks (?) in the following series are :\" class=\"read-more button\" href=\"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/#more-89800\">Detailed Solution<span class=\"screen-reader-text\">The right letters for question marks (?) in the following series are :<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1085],"tags":[1468,1102],"class_list":["post-89800","post","type-post","status-publish","format-standard","hentry","category-upsc-capf","tag-1468","tag-quantitative-aptitude-and-reasoning","no-featured-image-padding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The right letters for question marks (?) in the following series are :<\/title>\n<meta name=\"description\" content=\"The series A C B E C G D follows a pattern where letters alternate between two sequences. The next two letters are I and E. The series is A C B E C G D ? ? Observe the letters at odd positions (1st, 3rd, 5th, 7th, 9th): A, B, C, D, ? This is a simple alphabetical sequence starting from A (1st letter of the alphabet), incrementing by one letter each time. The 9th letter in the overall series is at the 5th odd position, so it should be the 5th letter of the alphabet, which is E. Observe the letters at even positions (2nd, 4th, 6th, 8th): C, E, G, ? This is a sequence starting from C (3rd letter), incrementing by two letters each time (C+2=E, E+2=G). The 8th letter in the overall series is at the 4th even position. The sequence is C(3), E(5), G(7), I(9). The 4th letter in this sequence is I. Combining these, the 8th letter is I and the 9th letter is E. The series continues as A C B E C G D I E.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The right letters for question marks (?) in the following series are :\" \/>\n<meta property=\"og:description\" content=\"The series A C B E C G D follows a pattern where letters alternate between two sequences. The next two letters are I and E. The series is A C B E C G D ? ? Observe the letters at odd positions (1st, 3rd, 5th, 7th, 9th): A, B, C, D, ? This is a simple alphabetical sequence starting from A (1st letter of the alphabet), incrementing by one letter each time. The 9th letter in the overall series is at the 5th odd position, so it should be the 5th letter of the alphabet, which is E. Observe the letters at even positions (2nd, 4th, 6th, 8th): C, E, G, ? This is a sequence starting from C (3rd letter), incrementing by two letters each time (C+2=E, E+2=G). The 8th letter in the overall series is at the 4th even position. The sequence is C(3), E(5), G(7), I(9). The 4th letter in this sequence is I. Combining these, the 8th letter is I and the 9th letter is E. The series continues as A C B E C G D I E.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/\" \/>\n<meta property=\"og:site_name\" content=\"MCQ and Quiz for Exams\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-01T10:12:55+00:00\" \/>\n<meta name=\"author\" content=\"rawan239\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"rawan239\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"The right letters for question marks (?) in the following series are :","description":"The series A C B E C G D follows a pattern where letters alternate between two sequences. The next two letters are I and E. The series is A C B E C G D ? ? Observe the letters at odd positions (1st, 3rd, 5th, 7th, 9th): A, B, C, D, ? This is a simple alphabetical sequence starting from A (1st letter of the alphabet), incrementing by one letter each time. The 9th letter in the overall series is at the 5th odd position, so it should be the 5th letter of the alphabet, which is E. Observe the letters at even positions (2nd, 4th, 6th, 8th): C, E, G, ? This is a sequence starting from C (3rd letter), incrementing by two letters each time (C+2=E, E+2=G). The 8th letter in the overall series is at the 4th even position. The sequence is C(3), E(5), G(7), I(9). The 4th letter in this sequence is I. Combining these, the 8th letter is I and the 9th letter is E. The series continues as A C B E C G D I E.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/","og_locale":"en_US","og_type":"article","og_title":"The right letters for question marks (?) in the following series are :","og_description":"The series A C B E C G D follows a pattern where letters alternate between two sequences. The next two letters are I and E. The series is A C B E C G D ? ? Observe the letters at odd positions (1st, 3rd, 5th, 7th, 9th): A, B, C, D, ? This is a simple alphabetical sequence starting from A (1st letter of the alphabet), incrementing by one letter each time. The 9th letter in the overall series is at the 5th odd position, so it should be the 5th letter of the alphabet, which is E. Observe the letters at even positions (2nd, 4th, 6th, 8th): C, E, G, ? This is a sequence starting from C (3rd letter), incrementing by two letters each time (C+2=E, E+2=G). The 8th letter in the overall series is at the 4th even position. The sequence is C(3), E(5), G(7), I(9). The 4th letter in this sequence is I. Combining these, the 8th letter is I and the 9th letter is E. The series continues as A C B E C G D I E.","og_url":"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/","og_site_name":"MCQ and Quiz for Exams","article_published_time":"2025-06-01T10:12:55+00:00","author":"rawan239","twitter_card":"summary_large_image","twitter_misc":{"Written by":"rawan239","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/","url":"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/","name":"The right letters for question marks (?) in the following series are :","isPartOf":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#website"},"datePublished":"2025-06-01T10:12:55+00:00","dateModified":"2025-06-01T10:12:55+00:00","author":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209"},"description":"The series A C B E C G D follows a pattern where letters alternate between two sequences. The next two letters are I and E. The series is A C B E C G D ? ? Observe the letters at odd positions (1st, 3rd, 5th, 7th, 9th): A, B, C, D, ? This is a simple alphabetical sequence starting from A (1st letter of the alphabet), incrementing by one letter each time. The 9th letter in the overall series is at the 5th odd position, so it should be the 5th letter of the alphabet, which is E. Observe the letters at even positions (2nd, 4th, 6th, 8th): C, E, G, ? This is a sequence starting from C (3rd letter), incrementing by two letters each time (C+2=E, E+2=G). The 8th letter in the overall series is at the 4th even position. The sequence is C(3), E(5), G(7), I(9). The 4th letter in this sequence is I. Combining these, the 8th letter is I and the 9th letter is E. The series continues as A C B E C G D I E.","breadcrumb":{"@id":"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/exam.pscnotes.com\/mcq\/the-right-letters-for-question-marks-in-the-following-series-are\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/exam.pscnotes.com\/mcq\/"},{"@type":"ListItem","position":2,"name":"UPSC CAPF","item":"https:\/\/exam.pscnotes.com\/mcq\/category\/upsc-capf\/"},{"@type":"ListItem","position":3,"name":"The right letters for question marks (?) in the following series are :"}]},{"@type":"WebSite","@id":"https:\/\/exam.pscnotes.com\/mcq\/#website","url":"https:\/\/exam.pscnotes.com\/mcq\/","name":"MCQ and Quiz for Exams","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/exam.pscnotes.com\/mcq\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/5807dafeb27d2ec82344d6cbd6c3d209","name":"rawan239","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/exam.pscnotes.com\/mcq\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/761a7274f9cce048fa5b921221e7934820d74514df93ef195a9d22af0c1c9001?s=96&d=mm&r=g","caption":"rawan239"},"sameAs":["https:\/\/exam.pscnotes.com"],"url":"https:\/\/exam.pscnotes.com\/mcq\/author\/rawan239\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/89800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/comments?post=89800"}],"version-history":[{"count":0,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/posts\/89800\/revisions"}],"wp:attachment":[{"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/media?parent=89800"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/categories?post=89800"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exam.pscnotes.com\/mcq\/wp-json\/wp\/v2\/tags?post=89800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}