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Consider a little league team that has 15 players on its roster. (a) how many ways are there to select 9 players for the starting lineup?
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Consider a little league team that has 15 players on its roster. (a) how many ways are there to select 9 players for the starting lineup?

User Squarecandy
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(a) Assuming it doesn't matter who plays where, 9 players can be chosen from 15 in 15!/(9!*6!) = 5005 different ways.
User Subharb
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