title: Need to generate pair of numbers from a given range in C#
body: <p>Well, I need to generate 2 numbers within the range of (1,8).
  Suppose, The first two numbers are 3 &amp; 4. In second time the range will exclude 3 &amp; 4, that's what i want to accomplish. In this way the loop will continue for 4 times.</p>
  
  <p>I have been trying it...but cannot proceed<br/>
  All I know is to use <code>Random</code> Class</p>
  
  <p><b>The range is fixed</b></p>
  
  <p>Any type of help will be accepted.Thanks in advance</p>