There Are Two More Assignments in a Class Before Its

Short Answer

There are two more assignments in a class before its end,and if you get an A on at least one of them,you will get an A for the semester.Your subjective assessment of your performance is $$\begin{array} { l c } { \text { Event } } & \text { Probability } \\\hline \text { A on paper and } A \text { on exam } & .25 \\\text { A on paper only } & .10 \\\text { A on exam only } & .30 \\\text { A on neither } & .35\end{array}$$
a.What is the probability of getting an A on the paper?
b.What is the probability of getting an A on the exam?
c.What is the probability of getting an A in the course?
d.Are the grades on the assignments independent?