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Probability 16 Online
OpenStudy (anonymous):

A captain and a co-captain are randomly selected from the 12 members of a fencing team. Determine the probability that Lauren is chosen as the captain, and Isabel is chosen as the co-captain

OpenStudy (anonymous):

is that 1/66

OpenStudy (perl):

there is one way to choose Lauren as captain and Isabel as co-captain. there are 12 choose 2 ways (permutations) to choose a captain and co-captain , (since order counts) so the answer is 1 / 12 P2

OpenStudy (perl):

1 / ( 12 * 11)

OpenStudy (anonymous):

1/32

OpenStudy (anonymous):

sorry i mean 1/132

OpenStudy (perl):

actually, one second

OpenStudy (perl):

yes I think thats right

OpenStudy (perl):

for the denominator, there are 12 ways to choose captain, and for each of these choices there are 11 remaining for co-captain , so 12 x 11 total ways to choose captain and co-captain

OpenStudy (perl):

is that one of the coices?

OpenStudy (perl):

is that one of the choices??

OpenStudy (anonymous):

ya

OpenStudy (anonymous):

thnx

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