{"id":34306,"date":"2025-06-23T14:49:46","date_gmt":"2025-06-23T14:49:46","guid":{"rendered":"https:\/\/gaviki.com\/blog\/?p=34306"},"modified":"2025-06-23T14:49:47","modified_gmt":"2025-06-23T14:49:47","slug":"find-the-least-common-multiple-of-154-and-231","status":"publish","type":"post","link":"https:\/\/gaviki.com\/blog\/find-the-least-common-multiple-of-154-and-231\/","title":{"rendered":"Find the least common multiple of 154 and 231"},"content":{"rendered":"\n<p>Find the least common multiple of 154 and 231.<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">The correct answer and explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p><strong>Correct Answer: 3,542<\/strong><\/p>\n\n\n\n<p>To find the least common multiple (LCM) of 154 and 231, begin with their prime factorizations.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Prime factorization<\/h3>\n\n\n\n<p><strong>154<\/strong><br>Divide by 2:<br>154 \u00f7 2 = 77<br>77 \u00f7 7 = 11<br>11 is a prime number<br>So, the prime factorization of 154 is:<br><strong>2 \u00d7 7 \u00d7 11<\/strong><\/p>\n\n\n\n<p><strong>231<\/strong><br>Divide by 3:<br>231 \u00f7 3 = 77<br>77 \u00f7 7 = 11<br>11 is a prime number<br>So, the prime factorization of 231 is:<br><strong>3 \u00d7 7 \u00d7 11<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Identify all prime factors<\/h3>\n\n\n\n<p>The prime factors for 154 are 2, 7, and 11<br>The prime factors for 231 are 3, 7, and 11<\/p>\n\n\n\n<p>To find the least common multiple, take <strong>each prime factor that appears<\/strong> in either number and use the <strong>highest power<\/strong> of each.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>2 (from 154)<\/li>\n\n\n\n<li>3 (from 231)<\/li>\n\n\n\n<li>7 (common to both)<\/li>\n\n\n\n<li>11 (common to both)<\/li>\n<\/ul>\n\n\n\n<p>Multiply all the prime factors:<br><strong>2 \u00d7 3 \u00d7 7 \u00d7 11<\/strong><\/p>\n\n\n\n<p>First:<br>2 \u00d7 3 = 6<br>6 \u00d7 7 = 42<br>42 \u00d7 11 = <strong>462<\/strong><\/p>\n\n\n\n<p>However, this is not correct for the LCM because 462 is a common factor, but not the <em>least common multiple<\/em>. Let&#8217;s go step-by-step using the correct method.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Use the formula<\/h3>\n\n\n\n<p>The formula for LCM is:<br><strong>LCM(a, b) = (a \u00d7 b) \u00f7 GCF(a, b)<\/strong><\/p>\n\n\n\n<p>First, find the greatest common factor (GCF) of 154 and 231.<\/p>\n\n\n\n<p>From the factorizations:<br>154 = 2 \u00d7 7 \u00d7 11<br>231 = 3 \u00d7 7 \u00d7 11<\/p>\n\n\n\n<p>The common prime factors are <strong>7<\/strong> and <strong>11<\/strong>, so:<br><strong>GCF = 7 \u00d7 11 = 77<\/strong><\/p>\n\n\n\n<p>Now use the LCM formula:<br><strong>LCM = (154 \u00d7 231) \u00f7 77<\/strong><\/p>\n\n\n\n<p>First:<br>154 \u00d7 231 = 35,574<\/p>\n\n\n\n<p>Then divide by 77:<br>35,574 \u00f7 77 = <strong>462<\/strong><\/p>\n\n\n\n<p>So the LCM is <strong>462<\/strong><\/p>\n\n\n\n<p>The earlier answer was wrong. <strong>Correct LCM is 462<\/strong>, not 3,542.<br>Explanation: The LCM is the smallest number that is a multiple of both 154 and 231. Using prime factorizations and the formula helps find the accurate result.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Find the least common multiple of 154 and 231. The correct answer and explanation is: Correct Answer: 3,542 To find the least common multiple (LCM) of 154 and 231, begin with their prime factorizations. Step 1: Prime factorization 154Divide by 2:154 \u00f7 2 = 7777 \u00f7 7 = 1111 is a prime numberSo, the prime [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-34306","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/34306","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=34306"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/34306\/revisions"}],"predecessor-version":[{"id":34311,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/34306\/revisions\/34311"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=34306"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=34306"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=34306"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}