How many different rankings are possible

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In an introductory statistics class there are 4 freshmen and 6 sophomores. An examination is given, and the students are ranked according to their performance. Assume that no two students obtain the same score.

(a) How many different rankings are possible?

(b) If the freshmen are ranked just among themselves and the sophomores just among themselves, how many different rankings are possible?

Reference no: EM132858286

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