<?xml version="1.0" encoding="UTF-8" standalone="yes"?><oembed><version><![CDATA[1.0]]></version><provider_name><![CDATA[Buttle&#039;s World]]></provider_name><provider_url><![CDATA[https://buttle.wordpress.com]]></provider_url><author_name><![CDATA[clgood]]></author_name><author_url><![CDATA[https://buttle.wordpress.com/author/buttle/]]></author_url><title><![CDATA[Mathemagic]]></title><type><![CDATA[link]]></type><html><![CDATA[<p>If Arthur Benjamin says he&#8217;s giving an answer &#8220;off the top of my head&#8221;, <a href="http://www.whatjamiefound.com/2007/12/17/math-magic/" target="_blank">believe him</a>.</p>
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