<PRE><B>Question 1186574</B>
&lt;br&gt;
(1) A winning in 4 sets:&lt;br&gt;
AAAA
number of ways: 1&lt;br&gt;
(2) A winning in 5 sets:&lt;br&gt;
(AAAB) in some order, followed by A
number of ways: &quot;4 choose 1&quot; = 4&lt;br&gt;
(3) A winning in 6 sets:&lt;br&gt;
(AAABB) in some order, followed by A
number of ways: &quot;5 choose 2&quot; = 10&lt;br&gt;
(4) A winning in 7 sets:&lt;br&gt;
(AAABBB) in some order, followed by A
number of ways: &quot;6 choose 3&quot; = 20&lt;br&gt;
Total number of ways for A to win: 20+10+4+1=35&lt;br&gt;
Total number of ways for B to win (by symmetry): 35&lt;br&gt;
ANSWER: 35+35=70 ways to complete the match&lt;br&gt;
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