{"id":100579,"date":"2024-07-18T11:41:31","date_gmt":"2024-07-18T06:11:31","guid":{"rendered":"https:\/\/www.practicemock.com\/blog\/?p=100579"},"modified":"2025-04-11T13:22:43","modified_gmt":"2025-04-11T07:52:43","slug":"number-system-for-ibps-rrb-exam","status":"publish","type":"post","link":"https:\/\/www.practicemock.com\/blog\/number-system-for-ibps-rrb-exam\/","title":{"rendered":"Number System For IBPS RRB Exam, Check Practical Questions"},"content":{"rendered":"\n<p><\/p>\n\n\n<div class=\"yoast-breadcrumbs\"><span><span><a href=\"https:\/\/www.practicemock.com\/blog\/\">Home<\/a><\/span> \u00bb <span><a href=\"https:\/\/www.practicemock.com\/blog\/category\/banking-insurance\/\">Banking &amp; Insurance<\/a><\/span> \u00bb <span class=\"breadcrumb_last\" aria-current=\"page\">Number System For IBPS RRB Exam<\/span><\/span><\/div>\n\n\n<p><\/p>\n\n\n\n<p>The Number System is a important topic for quantitative section and 3 to 4 question asked in the examination. The Number System is a Mathematical value that contains a number and symbols. As the name suggests Number Series are numbers in some pattern or sequence. Number series can either be missing or wrong and candidates either need to find the wrong or the missing number. In this article we are discussing the Number Series topics Quantitative section 10 Practice Questions with Detailed Solutions and a few tips and tricks as to how to solve such questions.&nbsp;candidates bookmark our article and check start their number system preparation with practical questions and their solutions.<\/p>\n\n\n\n<p><strong>Different Types of Questions Asked in Number Series<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Arranging Number<\/li>\n\n\n\n<li>Alternating Series<\/li>\n\n\n\n<li>Square Series<\/li>\n\n\n\n<li>Fibonacci Series<\/li>\n\n\n\n<li>Cube Series&nbsp;<\/li>\n\n\n\n<li>Mixed Operator Series&nbsp;<\/li>\n\n\n\n<li>Multiplication Series&nbsp;<\/li>\n\n\n\n<li>Subtraction Series&nbsp;<\/li>\n\n\n\n<li>Addition Series&nbsp;<\/li>\n\n\n\n<li>Division Series&nbsp;<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/www.practicemock.com\/ibps-rrb-officer-test-series\/?ref=11355\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Take a IBPS RRB PO Free Mock Test &amp; Know the Difficulty Level of the Questions Asked<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/www.practicemock.com\/blog\/ibps-clerk-notification-2024\/\"><strong>IBPS Clerk 2024 Notification Out- Click to Check<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Important Question Number Series for IBPS RRB 2024 Exam<\/h3>\n\n\n\n<p><strong>Question 1:<\/strong>&nbsp;The following numbers form a series. Find the odd one out.<\/p>\n\n\n\n<p>80, 60, 20, 10, 5, 2.5<\/p>\n\n\n\n<p>A) 80<\/p>\n\n\n\n<p>B) 60<\/p>\n\n\n\n<p>C) 20<\/p>\n\n\n\n<p>D) 10<\/p>\n\n\n\n<p>E) 5<\/p>\n\n\n\n<p><strong>Ans: 2<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p><strong>80\/2 = 40<\/strong><\/p>\n\n\n\n<p>40\/2 = 20<\/p>\n\n\n\n<p>20\/2 = 10<\/p>\n\n\n\n<p>10\/2 = 5<\/p>\n\n\n\n<p>5\/2 = 2.5<\/p>\n\n\n\n<p>Therefore, 40 should be in place of 60.<\/p>\n\n\n\n<p>Hence, option b.<\/p>\n\n\n\n<p><strong>Question 2:<\/strong>&nbsp;The following numbers form a series. Find the odd one out.<\/p>\n\n\n\n<p>86, 83, 77, 64, 41, -7<\/p>\n\n\n\n<p>A) 64<\/p>\n\n\n\n<p>B) 77<\/p>\n\n\n\n<p>C) 86<\/p>\n\n\n\n<p>D) 83<\/p>\n\n\n\n<p>E) 41<\/p>\n\n\n\n<p><strong>Ans: 1<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p>86 \u2013 3 = 83<\/p>\n\n\n\n<p>83 \u2013 6 = 77<\/p>\n\n\n\n<p><strong>77 \u2013 12 = 65<\/strong><\/p>\n\n\n\n<p>65 \u2013 24 = 41<\/p>\n\n\n\n<p>41 \u2013 48 = -7<\/p>\n\n\n\n<p>Therefore, 65 should be in place of 64.<\/p>\n\n\n\n<p>Hence, option a.<\/p>\n\n\n\n<p><strong>Question 3:<\/strong>&nbsp;The following numbers form a series. Find the odd one out.<\/p>\n\n\n\n<p>9, 10, 14, 23, 40, 64<\/p>\n\n\n\n<p>A) 9<\/p>\n\n\n\n<p>B) 10<\/p>\n\n\n\n<p>C) 14<\/p>\n\n\n\n<p>D) 23<\/p>\n\n\n\n<p>E) None of these<\/p>\n\n\n\n<p><strong>Ans: 5<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p>9 + 1<sup>2<\/sup>&nbsp;= 9 + 1 = 10<\/p>\n\n\n\n<p>10 + 2<sup>2<\/sup>&nbsp;= 10 + 4 = 14<\/p>\n\n\n\n<p>14 + 3<sup>2<\/sup>&nbsp;= 14 + 9 = 23<\/p>\n\n\n\n<p><strong>23 + 4<\/strong><strong><sup>2<\/sup><\/strong><strong>&nbsp;= 23 + 16 = 39<\/strong><\/p>\n\n\n\n<p>39 + 5<sup>2<\/sup>&nbsp;= 39 + 25 = 64<\/p>\n\n\n\n<p>Therefore, 39 should be in place of 40.<\/p>\n\n\n\n<p>Hence, option e.<\/p>\n\n\n\n<p><strong>Question 4:<\/strong>&nbsp;The following numbers form a series. Find the odd one out.<\/p>\n\n\n\n<p>3, 5, 8, 12, 17, 24<\/p>\n\n\n\n<p>A) 8<\/p>\n\n\n\n<p>B) 12<\/p>\n\n\n\n<p>C) 24<\/p>\n\n\n\n<p>D) 5<\/p>\n\n\n\n<p>E) 17<\/p>\n\n\n\n<p><strong>Ans: 3<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p>3 + 2 = 5<\/p>\n\n\n\n<p>5 + 3 = 8<\/p>\n\n\n\n<p>8 + 4 = 12<\/p>\n\n\n\n<p>12 + 5 = 17<\/p>\n\n\n\n<p><strong>17 + 6 = 23<\/strong><\/p>\n\n\n\n<p>Therefore, 23 should be in place of 24.<\/p>\n\n\n\n<p>Hence, option c.<\/p>\n\n\n\n<p><strong>Question 5:<\/strong>&nbsp;The following numbers form a series. Find the odd one out.<\/p>\n\n\n\n<p>1, 3, 7, 15, 30, 63<\/p>\n\n\n\n<p>A) 30<\/p>\n\n\n\n<p>B) 3<\/p>\n\n\n\n<p>C) 7<\/p>\n\n\n\n<p>D) 63<\/p>\n\n\n\n<p>E) 15<\/p>\n\n\n\n<p><strong>Ans: 1<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p>1 \u00d7 2 + 1 = 3<\/p>\n\n\n\n<p>3 \u00d7 2 + 1 = 7<\/p>\n\n\n\n<p>7 \u00d7 2 + 1 = 15<\/p>\n\n\n\n<p><strong>15 \u00d7 2 + 1 = 31<\/strong><\/p>\n\n\n\n<p>31 \u00d7 2 + 1 = 63<\/p>\n\n\n\n<p>Therefore, 31 should be in place of 30.<\/p>\n\n\n\n<p>Hence, option a.<\/p>\n\n\n\n<p><strong>Question 6:<\/strong>&nbsp;What will come in place of the question mark (?) in the following series?<\/p>\n\n\n\n<p>23, 38, 68, 113, ?, 248<\/p>\n\n\n\n<p>A) 151<\/p>\n\n\n\n<p>B) 162<\/p>\n\n\n\n<p>C) 173<\/p>\n\n\n\n<p>D) 184<\/p>\n\n\n\n<p>E) 155<\/p>\n\n\n\n<p><strong>Ans: 3<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p>The series follows the pattern:<br>23 + 15 \u00d7 1 = 38,<br>38 + 15 \u00d7 2 = 68,<br>68 + 15 \u00d7 3 = 113,<br>113 + 15 \u00d7 4 = 173,<br>173 + 15 \u00d7 5 = 248.<br>Hence, option c.<\/p>\n\n\n\n<p><strong>Question 7:<\/strong>&nbsp;What will come in place of the question mark (?) in the following series?<\/p>\n\n\n\n<p>250, 249, 241, 214, ?, 25<\/p>\n\n\n\n<p>A) 164<\/p>\n\n\n\n<p>B) 150<\/p>\n\n\n\n<p>C) 188<\/p>\n\n\n\n<p>D) 172<\/p>\n\n\n\n<p>E) None of these<\/p>\n\n\n\n<p><strong>Ans: 2<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p>The series follows the pattern:<br>250 \u2013 1<sup>3&nbsp;<\/sup>= 249,<br>249 \u2013 2<sup>3<\/sup>&nbsp;= 241,<br>241 \u2013 3<sup>3&nbsp;<\/sup>= 214,<br>214 \u2013 4<sup>3&nbsp;<\/sup>= 150,<br>150 \u2013 5<sup>3<\/sup>&nbsp;= 25.<br>Hence, option b.<\/p>\n\n\n\n<p><strong>Question 8:<\/strong>&nbsp;What will come in place of the question mark (?) in the following series?<\/p>\n\n\n\n<p>140, 150, 170, 210, 290, ?<\/p>\n\n\n\n<p>A) 510<\/p>\n\n\n\n<p>B) 380<\/p>\n\n\n\n<p>C) 540<\/p>\n\n\n\n<p>D) 430<\/p>\n\n\n\n<p>E) 450<\/p>\n\n\n\n<p><strong>Ans: 5<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p>The series follows the pattern:<\/p>\n\n\n\n<p>140 + 10 = 150,<\/p>\n\n\n\n<p>150 + 20 = 170,<\/p>\n\n\n\n<p>170 + 40 = 210,<\/p>\n\n\n\n<p>210 + 80 = 290,<\/p>\n\n\n\n<p>290 + 160 = 450.<\/p>\n\n\n\n<p>Hence, option e.<\/p>\n\n\n\n<p><strong>Question 9:<\/strong>&nbsp;What will come in place of the question mark (?) in the following series?<\/p>\n\n\n\n<p>472.5, ?, 105, 60 ,40 , 32<\/p>\n\n\n\n<p>A) 210<\/p>\n\n\n\n<p>B) 240<\/p>\n\n\n\n<p>C) 250<\/p>\n\n\n\n<p>D) 265<\/p>\n\n\n\n<p>E) None of these<\/p>\n\n\n\n<p><strong>Ans: 1<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong><\/p>\n\n\n\n<p>The series follows the pattern:<br>472.5 \/ 2.25 = 210,<br>210 \/ 2 = 105,<br>105 \/ 1.75 = 60,<br>60 \/ 1.5 = 40,<br>40 \/ 1.25 = 32.<br>Hence, option a.<\/p>\n\n\n\n<p><strong>Question 10:<\/strong>&nbsp;What will come in place of the question mark (?) in the following series?<\/p>\n\n\n\n<p>33, 34, 70, 213, 856, ?<\/p>\n\n\n\n<p>A) 3245<\/p>\n\n\n\n<p>B) 3664<\/p>\n\n\n\n<p>C) 4285<\/p>\n\n\n\n<p>D) 4675<\/p>\n\n\n\n<p>E) 4854<\/p>\n\n\n\n<p><strong>Ans: 3<\/strong><\/p>\n\n\n\n<p><strong>Solution:<\/strong>The series follows the pattern:<br>33 \u00d7 1 + 1 = 34,<br>34 \u00d7 2 + 2 = 70,<br>70 \u00d7 3 + 3 = 213,<br>213 \u00d7 4 + 4 = 856,<br>856 \u00d7 5 + 5 = 4285.<br>Hence, option c.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-vivid-cyan-blue-background-color has-text-color has-background wp-element-button\" href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-po-clerk-pdf-course\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong><strong>IBPS RRB PO\/Clerk PDF Course \u2013 Click To Check<\/strong><\/strong><\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Check Related Blogs For IBPS RRB PO 2024<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td colspan=\"2\"><strong>Check Related IBPS RRB PO Blogs<\/strong><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-po\/ibps-rrb-po-syllabus\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB PO Syllabus 2024<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-po\/ibps-rrb-po-cut-off\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB PO Cut Off 2024<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-po\/ibps-rrb-po-exam-pattern\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB PO Exam Pattern 2024<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-po\/ibps-rrb-po-previous-year-question-paper\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB PO Previous Year Question Paper 2024<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-po\/ibps-rrb-po-salary\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB PO Salary 2024<\/a><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Check Related Blogs For IBPS RRB Clerk 2024<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td colspan=\"2\"><strong>Check Related Blogs For IBPS RRB Clerk 2024<\/strong><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-clerk\/ibps-rrb-clerk-syllabus\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB Clerk Syllabus 2024<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-clerk\/ibps-rrb-clerk-cut-off\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB Clerk Cut Off 2024<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-clerk\/ibps-rrb-clerk-exam-pattern\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB Clerk Exam Pattern 2024<\/a><\/td><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-clerk\/ibps-rrb-clerk-previous-year-question-paper\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB Clerk Previous Year Question Paper 2024<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.practicemock.com\/blog\/ibps-rrb-clerk\/ibps-rrb-clerk-salary\/\" target=\"_blank\" rel=\"noreferrer noopener\">IBPS RRB Clerk Salary 2024<\/a><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Number System For IBPS RRB Exam FAQ<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1721016239567\"><strong class=\"schema-faq-question\">What is the number system?<\/strong> <p class=\"schema-faq-answer\">The number system is a writing system for expressing numbers using digits or symbols in a consistent manner. The most common number system is the decimal system, which is based on ten digits (0-9).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1721016251780\"><strong class=\"schema-faq-question\">What are the different types of number systems?<\/strong> <p class=\"schema-faq-answer\">The primary types of number systems are the decimal (base 10), binary (base 2), octal (base 8), and hexadecimal (base 16) systems.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1721016365743\"><strong class=\"schema-faq-question\">What is a natural number?<\/strong> <p class=\"schema-faq-answer\">Natural numbers are positive integers starting from 1 and increasing without end (1, 2, 3, \u2026).<\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>In this article we are providing some tips &#038; tricks to boost your prep Number System topic For IBPS RRB Exam, check practical questions.<\/p>\n","protected":false},"author":13,"featured_media":100581,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[22],"tags":[],"class_list":["post-100579","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-banking-insurance"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Number System For IBPS RRB Exam, Check Practical Questions<\/title>\n<meta name=\"description\" content=\"In this article we are providing some tips &amp; tricks to boost your prep Number System topic For IBPS RRB Exam, check practical questions.\" \/>\n<meta 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I cleared many bank exams time by time but couldn't join because of my passion towards writing. I write blogs to help aspirants prepare for Banking and Insurance exams. These blogs turn out to be a one-stop destination for comprehensive information on some of the biggest competitive exams like SBI PO\/Clerk, IBPS PO\/Clerk, IBPS RRB PO\/Clerk and RBI. My ultimate goal is to provide accurate and easy-to-understand information, covering topics like exam patterns, syllabus, study techniques, and more. 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