SOLUTION: two girls chosen at random to attend an after school meeting.how many diffrent pairs are possible?

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Question 949940: two girls chosen at random to attend an after school meeting.how many diffrent pairs are possible?
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
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If there are n students then it's nC2 = n(n-1)/2!