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# There are 1150 students and all are enrolled in both Bio and Chem. Only 50 got A+ in Chem. 375 got A+ in Biology. 45 got A+ in both Bio and Chem. We...

There are 1150 students and all are enrolled in both Bio and Chem.

Only 50 got A+ in Chem.

375 got A+ in Biology.

45 got A+ in both Bio and Chem.

We select a student at random from the 1150 students.

- What is the probability that the student got an A+ in Bio but not in chem?
- What is the probability that the student got an A+ in Chem but not in bio?
- What is the probability that the student did not get an A+ in Bio
**or**did not get an A+ in Chem? - What is the probability that the student got an A+ in
**at least one**of these two courses? - What is the probability that the student
__did not__get an A+ in Bio**and**__did not__get an A+ in Chem?