WeBWorK Standalone Renderer

Find the value of each of the following quantities:
$C(6 , 4 )=$
$C(6 , 5 )=$
$C(12 , 7 )=$
$C(6 , 5 )=$
$C(8 , 5 )=$
$C(8 , 6 )=$

You can earn partial credit on this problem.