Question 340402
{{{N!/(N-1)!}}}{{{""=""}}}{{{(N(N-1)(N-2)(N-3)(N-4)*"..."*4*3*2*1)/((N-1)(N-2)(N-3)(N-4)*"..."*4*3*2*1) }}}{{{""=""}}}{{{(N(cross(N-1))(cross(N-2))(cross(N-3))(cross(N-4))*"..."*cross(4)*cross(3)*cross(2)*cross(1))/((cross(N-1))(cross(N-2))(cross(N-3))(cross(N-4))*"..."*cross(4)*cross(3)*cross(2)*cross(1)) }}}{{{""=""}}}{{{N}}}
<pre><b>
Edwin</pre>