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Mathematics 6 Online
OpenStudy (anonymous):

Please Help?

jimthompson5910 (jim_thompson5910):

How many choices do you have for president?

OpenStudy (mathmale):

Others could perhaps help you more if you'd explain how you decided upon D for your answer. This problem deals with combinations. What is the number of choices you have (Jim T. is asking the same question)? Call this 'n'. Of those, how many are you taking at any one time? Call this 'x'. A shorthand way of writing this problem would be\[_{n}C _{x}\]

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