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Mathematics 7 Online
OpenStudy (anonymous):

Please help, I'll give you a medal<3 How many different ways can a coach select the captain and co-captain of a team from a group of 20 people.? A. 40 B.160 C.380 D. 420

jimthompson5910 (jim_thompson5910):

use the same idea as shown on the last problem

jimthompson5910 (jim_thompson5910):

this time, order matters

OpenStudy (anonymous):

Is it C?

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

correct

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