Question 968390
<pre>
10 Choose 4 = 10C4 = {{{matrix(1,13,10*9*8*7,"<--4",factors,in,numerator,starting,with,"10,", coming,down,1,each,time)/matrix(1,18,"","","",4*3*2*1,"","","<--4",factors,in,denominator,starting,with,"4,",coming,down,1,each,time)}}}

After cancelling and multiplying or multiplying and dividing, we get 210

Edwin</pre>