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Mathematics 16 Online
OpenStudy (anonymous):

A committee of three women and seven men is to be seated at a round table . (a) what is the probability that the three females will sit together? (b) The committee elects a president and a vice-president. What is the probability that they are sitting opposite one another?

OpenStudy (amistre64):

hmm ..... have to think circular rather than linear

OpenStudy (anonymous):

yeah it confuses me

OpenStudy (anonymous):

n!/n = (n-1)!

OpenStudy (anonymous):

thats for circular problems

OpenStudy (amistre64):

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OpenStudy (amistre64):

i havent done n! for circles to be confident :)

OpenStudy (anonymous):

the total will be: (10-1)!=9! = 362880

OpenStudy (amistre64):

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OpenStudy (amistre64):

and id say 10 ways for them to be seated next to each other

OpenStudy (amistre64):

do we count the other way too? or just keep it in the same rotation?

OpenStudy (anonymous):

no just the same rotation i believe

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