Question 1082625
if order is not important, and if repetition not allowed, we have


{{{26C5= n!/(r!(n-r)!)}}}


{{{26C5=26!/(5!(26-5)!)}}}


{{{26C5=26!/(5!(21)!)}}}


{{{26C5=(26*25*24*23*22*21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1)/((5*4*3*2*1)(21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1))}}}

{{{26C5=(26*25*24*23*22*cross(21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1))/((5*4*3*2*1)cross((21*20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1)))}}}


{{{26C5=(26*cross(25)5*cross(24)cross(6)cross(2)*23*22)/(cross(5)*cross(4)*cross(3)*cross(2)*1)}}}


{{{26C5=26*5*23*22}}}


{{{26C5=65780}}}

your answer is:

C) {{{65780}}}