Question 1130818


{{{35C2= n!/r!(n-r)!}}}

{{{n=35}}}
{{{r=2}}}

{{{35C2= 35!/2!(35-2)!}}}

{{{35C2= 35!/2!(33)!}}}

{{{35C2= (35*34*cross(33*32*31*___*1))/(2*1cross((33*32*___*1)))}}}

{{{35C2= (35*34)/2}}}

{{{35C2= 595}}}