<PRE><B>Question 1001173</B>
&lt;pre&gt;
The sample space is

{HHH,&lt;font color=&quot;red&quot;&gt;&lt;b&gt;HHT&lt;/b&gt;&lt;/font&gt;,&lt;font color=&quot;red&quot;&gt;&lt;b&gt;HTH&lt;/b&gt;&lt;/font&gt;,HTT,&lt;font color=&quot;red&quot;&gt;&lt;b&gt;THH&lt;/b&gt;&lt;/font&gt;,THT,TTH,TTT}

The outcomes with 1 tail and 2 heads are in red.

That&#39;s 3 ways out of 8, which means on the average it will
occur about 3/8ths of the time, and therefore the probability
of 1 tail and 2 heads is 3/8.

Edwin&lt;/pre&gt;</PRE>