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		<id>http://wiki.christophchamp.com/index.php?action=history&amp;feed=atom&amp;title=Puzzles</id>
		<title>Puzzles - Revision history</title>
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		<updated>2026-05-23T21:38:04Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>http://wiki.christophchamp.com/index.php?title=Puzzles&amp;diff=5269&amp;oldid=prev</id>
		<title>Christoph at 15:40, 18 February 2009</title>
		<link rel="alternate" type="text/html" href="http://wiki.christophchamp.com/index.php?title=Puzzles&amp;diff=5269&amp;oldid=prev"/>
				<updated>2009-02-18T15:40:38Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class='diff diff-contentalign-left'&gt;
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				&lt;td colspan='2' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan='2' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 15:40, 18 February 2009&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l4&quot; &gt;Line 4:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 4:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;**Answer: 7.5°&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;**Answer: 7.5°&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;**Explanation: Most common guess is 0°. At 3:15, the minute hand sits at the 3, but the hour hand is 1/4 of the way between 3 and 4. If the clock has 360° divided by 12 hours = 30°/hour. And 1/4 of 30° = 7.5°.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;**Explanation: Most common guess is 0°. At 3:15, the minute hand sits at the 3, but the hour hand is 1/4 of the way between 3 and 4. If the clock has 360° divided by 12 hours = 30°/hour. And 1/4 of 30° = 7.5°.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==External links==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;*[http://mindcipher.com/ Mindcipher]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Hobbies]]&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Category:Hobbies]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Christoph</name></author>	</entry>

	<entry>
		<id>http://wiki.christophchamp.com/index.php?title=Puzzles&amp;diff=5268&amp;oldid=prev</id>
		<title>Christoph: New page: This article will list ''some'' of my favourite '''puzzles''' or '''brain teasers'''.  *Problem: &quot;How many degrees are there in the angle between the hour and minute hands of a clock when ...</title>
		<link rel="alternate" type="text/html" href="http://wiki.christophchamp.com/index.php?title=Puzzles&amp;diff=5268&amp;oldid=prev"/>
				<updated>2009-02-18T15:40:00Z</updated>
		
		<summary type="html">&lt;p&gt;New page: This article will list &amp;#039;&amp;#039;some&amp;#039;&amp;#039; of my favourite &amp;#039;&amp;#039;&amp;#039;puzzles&amp;#039;&amp;#039;&amp;#039; or &amp;#039;&amp;#039;&amp;#039;brain teasers&amp;#039;&amp;#039;&amp;#039;.  *Problem: &amp;quot;How many degrees are there in the angle between the hour and minute hands of a clock when ...&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;This article will list ''some'' of my favourite '''puzzles''' or '''brain teasers'''.&lt;br /&gt;
&lt;br /&gt;
*Problem: &amp;quot;How many degrees are there in the angle between the hour and minute hands of a clock when the time is a quarter past three?&amp;quot;&lt;br /&gt;
**Answer: 7.5°&lt;br /&gt;
**Explanation: Most common guess is 0°. At 3:15, the minute hand sits at the 3, but the hour hand is 1/4 of the way between 3 and 4. If the clock has 360° divided by 12 hours = 30°/hour. And 1/4 of 30° = 7.5°.&lt;br /&gt;
&lt;br /&gt;
[[Category:Hobbies]]&lt;/div&gt;</summary>
		<author><name>Christoph</name></author>	</entry>

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