SOLUTION: 9C3/12C3

Question 1101991: 9C3/12C3
Found 2 solutions by Alan3354, greenestamps:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
9C3/12C3
= (9!/6!*3!)/(12!/9!*3!)
= (9!/6!*3!)*(9!*3!/12!)
= (9!/6!)*(9!/12!)
= 9*8*7/(12*11*10)
= 3*7/(5*11)
= 21/55

Answer by greenestamps(13258) (Show Source): You can put this solution on YOUR website!

There are many variations of how this could be simplified.

Since the "C3" is the same in both expressions, I would evaluate it like this:

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