<PRE><B>Question 1081065</B>
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&lt;pre&gt;
1.  The solution of the inequality &lt;U&gt;x &lt;= 1&lt;/U&gt;  is semi-infinite segment A = ({{{-infinity}}},{{{1}}}].


2.  The solution of the inequality &lt;U&gt;x &lt;= 10&lt;/U&gt;  is semi-infinite segment B = ({{{-infinity}}},{{{10}}}].


3.  The solution of the inequality system  &lt;U&gt;x&lt;= 1 OR x &lt;= 10&lt;/U&gt;  is semi-infinite segment A U B = ({{{-infinity}}},{{{10}}}], 
    which is a &lt;U&gt;UNION&lt;/U&gt; of the sets A and B, introduced in n.n.1 and 2.  &lt;U&gt;Notice the conjunction &quot;OR&quot;&lt;/U&gt; (!)


4.  The solution of the inequality system  &lt;U&gt;x&lt;= 1 AND x &lt;= 10&lt;/U&gt;  is semi-infinite segment A n B = ({{{-infinity}}},{{{1}}}], 
    which is an &lt;U&gt;INTERSECTION&lt;/U&gt; of the sets A and B, introduced in n.n.1 and 2.  &lt;U&gt;Notice the conjunction &quot;AND&quot;&lt;/U&gt; (!)
&lt;/pre&gt;

5.  &amp;nbsp;In Math, &amp;nbsp;every word matters and counts.


&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;In Math problem formulation EACH WORD must be correct and correctly used &amp;nbsp;(and correctly understood, &amp;nbsp;as well).



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