Question 1089759
<font color="black" face="times" size="3">It seems like the two values have been mixed up somehow.


Here's what it should be:


n C r = (n!)/(r!*(n-r)!)
12 C 4 = (12!)/(4!*(12-4)!)
12 C 4 = (12!)/(4!*8!)
12 C 4 = (12*11*10*9*8!)/(4!*8!)
12 C 4 = (12*11*10*9)/(4!)
12 C 4 = (12*11*10*9)/(4*3*2*1)
12 C 4 = 11880/24
<font color=red>12 C 4 = 495</font>


n C r = (n!)/(r!*(n-r)!)
11 C 3 = (11!)/(3!*(11-3)!)
11 C 3 = (11!)/(3!*8!)
11 C 3 = (11*10*9*8!)/(3!*8!)
11 C 3 = (11*10*9)/(3!)
11 C 3 = (11*10*9)/(3*2*1)
11 C 3 = 990/6
<font color=red>11 C 3 = 165</font>
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