Mathematics, 13.07.2019 22:00 Wanna14ever

Aschool choir has 80 students; 36 of them are in seventh grade. also, 40 students in the choir are girls; 18 of them are in seventh grade. what is the probability that a student picked at random from the choir is either a girl or is in seventh grade? a. `27/40` b. `29/40` c. `13/40` d. `33/40`

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Aschool choir has 80 students; 36 of them are in seventh grade. also, 40 students in the choir are...