Question 1124321
The names of four students are placed in a small box and two will be selected 
to represent the school in an oratory contest. Let #1, #2, #3 and #4 denote the students. What is the probability that: 
a) #3 is selected? 
<pre>
1 student out of 4 students = 1/4
</pre>
b) #3 or #4 is selected?
<pre>
2 students out of 4 students = 2/4 which reduces to 1/2
</pre> 
c) #3 is not selected? 
<pre>
3 students (#1. #2, or #4) out of 4 students = 3/4

Edwin</pre>