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I am standing behind five pupils who are signalling a five-digit number to someone on the opposite side of the playground. From where I am standing the number looks like 23456. What number is actually being signalled?&lt;/p&gt;
&lt;p&gt; &lt;/p&gt;
&lt;p&gt;If you liked this problem, &lt;a href=&quot;http://nrich.maths.org/public/viewer.php?obj_id=5458&amp;amp;refpage=titlesearch.php&quot;&gt;here is an NRICH task&lt;/a&gt; which challenges you to use similar mathematical ideas.&lt;/p&gt;
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  <title>Weekly Problem 34 - 2009</title>
  <description>
I am standing behind five pupils who are signalling a five-digit number to someone on the opposite side of the playground. What number is actually being signalled?

</description>
  <spec_group>Transformations and their Properties
    <specifier>Reflections</specifier>
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