Find the distance between the two numbers on a number line. Write your answer as a mixed number.
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This problem is basically 
If I plug in n = 16 and r = 9
So there are 4151347200 different nine player batting orders that can be chosen from a baseball team of 16 :)
If I plug in n = 16 and r = 9
So there are 4151347200 different nine player batting orders that can be chosen from a baseball team of 16 :)