a maths debating team consist of 4 speakers. a) in how many ways can all 4 speakers.  a.) In how many ways can all 4 speakers be arranged in a row for a photo? b.) How many ways can the captain and vice captain be chosen?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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a maths debating team consist of 4 speakers. a) in how many ways can all 4 speakers. 

a.) In how many ways can all 4 speakers be arranged in a row for a photo?

b.) How many ways can the captain and vice captain be chosen?

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