{"id":9785,"date":"2012-01-06T02:00:55","date_gmt":"2012-01-06T09:00:55","guid":{"rendered":"https:\/\/gmatclub.com\/blog\/?p=9785"},"modified":"2012-01-06T02:50:32","modified_gmt":"2012-01-06T09:50:32","slug":"gmat-question-of-the-day-jan-6-probability-and-critical-reasoning","status":"publish","type":"post","link":"https:\/\/gmatclub.com\/blog\/gmat-question-of-the-day-jan-6-probability-and-critical-reasoning\/","title":{"rendered":"GMAT Question of the Day (Jan 6): Probability and Critical Reasoning"},"content":{"rendered":"<p><strong>Math (PS)<\/strong><\/p>\n<p>Set <img src='https:\/\/s0.wp.com\/latex.php?latex=T&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='T' title='T' class='latex' \/> consists of all points <img src='https:\/\/s0.wp.com\/latex.php?latex=%28x%2C+y%29&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='(x, y)' title='(x, y)' class='latex' \/> such that <img src='https:\/\/s0.wp.com\/latex.php?latex=x%5E2+%2B+y%5E2+%3D+1&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='x^2 + y^2 = 1' title='x^2 + y^2 = 1' class='latex' \/> . If point <img src='https:\/\/s0.wp.com\/latex.php?latex=%28a%2C+b%29&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='(a, b)' title='(a, b)' class='latex' \/> is selected from set <img src='https:\/\/s0.wp.com\/latex.php?latex=T&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='T' title='T' class='latex' \/> at random, what is the probability that <img src='https:\/\/s0.wp.com\/latex.php?latex=b+%3E+a+%2B+1&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='b &gt; a + 1' title='b &gt; a + 1' class='latex' \/> ?<\/p>\n<p>(A) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B1%7D%7B4%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{1}{4}' title='\\frac{1}{4}' class='latex' \/><br \/>\n(B) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B1%7D%7B3%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{1}{3}' title='\\frac{1}{3}' class='latex' \/><br \/>\n(C) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B1%7D%7B2%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{1}{2}' title='\\frac{1}{2}' class='latex' \/><br \/>\n(D) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B3%7D%7B5%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{3}{5}' title='\\frac{3}{5}' class='latex' \/><br \/>\n(E) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B2%7D%7B3%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{2}{3}' title='\\frac{2}{3}' class='latex' \/><\/p>\n<div style=\"background-color: rgb(141, 179, 226); border-top: 4px solid rgb(0, 0, 0); border-bottom: 4px solid rgb(0, 0, 0); padding: 5px; margin-left: 20px; font-size: 15px; font-family: Gergia,serif; font-weight: bold\">\n<div style=\"font-size: 19px; color: rgb(255, 255, 255); margin-bottom: 10px; padding-left: 10px\">GMAT Daily Deals<\/div>\n<ul>\n<li style=\"padding: 0pt 0pt 10px 20px; color: rgb(255, 255, 255); list-style-type: disc\">e-GMAT, verbal for non-natives. Sign up thru GC to save! <a href=\"https:\/\/gmatclub.com\/blog\/courses\/e-gmat-discount-coupon-code\/\" style=\"color: rgb(0, 0, 255);\"><u>Sign up through GC to save!<\/u><\/a><\/li>\n<li style=\"padding: 0pt 0pt 10px 20px; color: rgb(255, 255, 255); list-style-type: disc\">Save 50% on Magoosh courses, an online GMAT Prep company when you sign up through GMAT Club. <a href=\"https:\/\/gmatclub.com\/blog\/courses\/magoosh-gmat-discount\/\" style=\"color: rgb(0, 0, 255);\"><u>Learn more!<\/u><\/a><\/li>\n<li style=\"padding: 0pt 0pt 0px 20px; color: rgb(255, 255, 255); list-style-type: disc\">FREE B-School Cheat Sheets from Precision Essay for top MBA programs such as Harvard, Stanford, and Wharton. <a href=\"https:\/\/www.precisionessay.com\/resources\/bschool-cheat-sheet\/\" style=\"color: rgb(0, 0, 255);\"><u>Download now!<\/u><\/a><\/li>\n<\/ul>\n<\/div>\n<p><\/p>\n<p><strong>Verbal (CR)<\/strong><\/p>\n<p>Every fall Croton's jays migrate south. The jays always join flocks of migrating crookbeaks with which they share the summer and winter territories. If a jay becomes separated from the crookbeaks it is accompanying, it wanders until it comes across another flock of crookbeaks. Clearly, therefore, Croton's jays lack the navigational ability to find their way south on their own.<\/p>\n<p>Which of the following, if true, most strengthens the argument above?<\/p>\n<p>(A) Croton's jays lay their eggs in the nest of crookbeaks, which breed upon completing their southern migration.<br \/>\n(B) The three species of most closely related to crookbeaks do not migrate at all.<br \/>\n(C) In the spring, Croton's jays migrate north in the company of Tattersall warblers.<br \/>\n(D) Species other than Croton's jays occasionally accompany flocks of migrating crookbeaks.<br \/>\n(E) In the spring, crookbeaks migrate north before Croton's jays do.<\/p>\n<div style=\"color:#cecece\">\nAnswers to the questions: <strong>A<\/strong>, <strong>C<\/strong><br \/>\nFor explanations please see these threads: <a href=\"https:\/\/gmatclub.com\/forum\/m20-76028.html\">math<\/a> and <a href=\"https:\/\/gmatclub.com\/forum\/every-fall-croton-s-jays-migrate-south-the-jays-always-join-75812.html\">verbal<\/a>\n<\/div>\n<p><\/p>\n<p><strong>Like these questions?<\/strong> Get the GMAT Club question collection: <a href=\"https:\/\/gmatclub.com\/tests\/\">online at GMAT Club<\/a> OR <a href=\"https:\/\/www.amazon.com\/gp\/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.com%2Fgp%2Fentity%2FGMAT-Club%2FB0048PPF3U%3Fie%3DUTF8%26ref_%3Dntt_athr_dp_pel_1&tag=gmatclub-20&linkCode=ur2&camp=1789&creative=390957\">on your Kindle<\/a> OR <a href=\"https:\/\/click.linksynergy.com\/fs-bin\/stat?id=PJTlq5NYqfE&offerid=146261&type=3&subid=blog&tmpid=1826&RD_PARM1=http%253A%252F%252Fitunes.apple.com%252Fus%252Fapp%252Fgmat-toolkit%252Fid328345537%253Fmt%253D8%2526uo%253D6%2526partnerId%253D30\">on your iPhone\/iPad<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Math (PS) Set consists of all points such that . If point is selected from set at random, what is the probability that ? (A) (B) (C) (D) (E) GMAT&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[152,9,721,717],"tags":[],"class_list":["post-9785","post","type-post","status-publish","format-standard","hentry","category-gmat-tests","category-gmat","category-critical-reasoning-gmat","category-problem-solving-gmat","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts\/9785","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/comments?post=9785"}],"version-history":[{"count":1,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts\/9785\/revisions"}],"predecessor-version":[{"id":9786,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts\/9785\/revisions\/9786"}],"wp:attachment":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/media?parent=9785"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/categories?post=9785"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/tags?post=9785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}