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OpenStudy (anonymous):
suppose there are 21 students in your class. if the teacher draws 2 names at random, what is the probability that you and your best friend will be chosen?
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OpenStudy (anonymous):
omg i need help with a question...any tips? #mathprobstho
OpenStudy (perl):
there are 21 students, Lets assume we label the students a,b,c,d,... s, t, u that is 21 letters (check) and lets suppose you are letter 'a'. how many ways can you be chosen if the teacher chooses two students at a time
OpenStudy (anonymous):
im confused...i really suck at math-.-
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