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find the number of batting orders for nine baseball players when the best two batters must be in the second and third positions
 one year ago
 one year ago
find the number of batting orders for nine baseball players when the best two batters must be in the second and third positions
 one year ago
 one year ago

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XavierBest ResponseYou've already chosen the best response.1
The easiest way to do this is to draw 9 lines and list your options 9 1 1 6 5 4 3 2 1 _ _ _ _ _ _ _ _ _ So we have 9*6*5*4*3*2 different lineups
 one year ago

louis413Best ResponseYou've already chosen the best response.0
yeah i know that but isnt there a easier way with the permutation equation?
 one year ago

louis413Best ResponseYou've already chosen the best response.0
this other website says 9!  ( 8! * 2 ! ) and the answer is right
 one year ago

phiBest ResponseYou've already chosen the best response.0
There are 9 batters. However, 2 are preselected. that leaves 7 batters and 7 slots. there are 7! ways of assigning the 7 batters to the 7 slots.
 one year ago

louis413Best ResponseYou've already chosen the best response.0
can you explain this?: 9!  ( 8! * 2 ! )
 one year ago

XavierBest ResponseYou've already chosen the best response.1
Ah sorry the first should be a 7 not 9 since the 1 and 1 are already preselected as phi says
 one year ago
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