<PRE><B>Question 297487</B>
9 C 4 = 9!/4!(9-4)! = 9!/(4!5!) = (9*8*7*6*5!)/(4!5!) = (9*8*7*6)/(4*3*2*1) = 126



12 C 4 = 12!/4!(12-4)! = 12!/(4!8!) = (12*11*10*9*8!)/(4!8!) = (12*11*10*9)/(4*3*2*1) = 495




(9 C 4)/(12 C 4) = 126/495 = 14/55 = 0.25454545</PRE>