<PRE><B>Question 1157141</B>
.


The answer to both questions, &amp;nbsp;a) &amp;nbsp;and &amp;nbsp;b), &amp;nbsp;is in this key phrase of the condition


&lt;pre&gt;
    &quot;each slot has an equal chance of capturing the ball.&quot;&quot;
&lt;/pre&gt;

It means that the result of each next experiment &amp;nbsp;DOES &amp;nbsp;NOT &amp;nbsp;DEPEND &amp;nbsp;on prehistory.


The answer for probability is  &amp;nbsp;&amp;nbsp;{{{18/38}}}.
&lt;/pre&gt;


</PRE>