ÿþ<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <head> <META NAME="DESCRIPTION" CONTENT="Test your powers of observation and intelligence with this quick and simple test."> <META NAME="KEYWORDS" CONTENT="f test, illusions, optical illusion, illusion"> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <meta http-equiv="Content-Language" content="EN-GB"> <title>The F Test - curiouser.co.uk </title> <LINK REL="stylesheet" HREF="style3.css" TYPE="text/css"> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-13092328-1']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 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Unfortunately, I know nothing of its origin, or its author. </p> <p style="margin-top: 3em"> Read this sentence: </p> <p style="font-size: 110%; margin-top: 2em"> FINISHED FILES ARE THE RE-<br> SULT OF YEARS OF SCIENTIF-<br> IC STUDY COMBINED WITH<br> THE EXPERIENCE OF YEARS.<br> </p> </div> <p style="margin-top: 2em"> Now count the F's in that sentence. Count them ONLY ONCE. Do not go back and count them again.<br> How many are there? </p> <p class="solution">Scroll down for <a href="#solution">SOLUTION</a></p> <h2 style="margin-top: 400px">SOLUTION</h2> <a name="solution"></a> <p> There are six F's in the sentence. </p> <p> Apparently, a person of average intelligence finds three of them. <br>If you spotted four, you're above average. <br>If you got five, you can turn your nose at almost anybody. <br>If you caught six, you are a genius. </p> <p> There is no catch. Many people forget the "OF"s. The human brain tends to see them as V's and not F's. 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