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The cards in a set of $36$ are numbered $1$ to $36$.&lt;br&gt;&lt;/br&gt;
The cards are shuffled and four cards are dealt.&lt;br&gt;&lt;/br&gt;
What are the chances of them being dealt in descending order?&lt;br&gt;&lt;/br&gt;
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If you liked this problem, &lt;a href=&quot;/7220&quot;&gt;here is an NRICH task&lt;/a&gt; which challenges you to use similar mathematical ideas.&lt;br&gt;&lt;/br&gt;
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The number of different arrangments of the four cards which are dealt is $4\times 3\times2\times1 = 24$.&lt;br&gt;&lt;/br&gt;
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In only one of these will the four cards be in descending order.&lt;br&gt;&lt;/br&gt;
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&lt;mdoxml version=&quot;1.0&quot;&gt;Probability - Stage 4 Short Problem UKMT 1997-2006 p78 Q13&lt;/mdoxml&gt;</canonXML>
  <end_user_role>2</end_user_role>
  <difficulty>3</difficulty>
  <keystage1>0</keystage1>
  <keystage2>0</keystage2>
  <keystage3>0</keystage3>
  <keystage4>1</keystage4>
  <keystage4plus>0</keystage4plus>
  <title>Weekly Problem 43 - 2012</title>
  <description>Cards are shuffled and four cards are dealt. What are the chances of them being dealt in descending order?</description>
  <spec_group>Secondary Mapping Document
    <specifier>DisplayCabinet</specifier>
  </spec_group>
  <spec_group>Secondary Mapping Document
    <specifier>Probability US</specifier>
  </spec_group>
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