anchor.diff:  <table border=1 bgcolor=#FAF0E6 width=500>
   <tr align=center><th><b>Pascals Triangle</b><br><br></th></tr>
   <tr align=center><td>
  +
   <% 
     def factorial(n1)
      res=1
  
positive.code: <%= "<br>".to_s %>
  <% end %>
  
  </td></tr>
  </table>
  </form>
  
negative.code:     end
     return res
    end
    n=10
    k=0
    for i in 0..n
        m=n-i-2
  