A Survey of a Sample of Business Students Resulted in the Following

A survey of a sample of business students resulted in the following information regarding the genders of the individuals and their selected major.
Selected Major
$$\begin{array} { l | c c c | c } \text { Gender } & \text { Management } & \text { Marketing } & \text { Others } & \text { Total } \\\hline \text { Male } & 40 & 10 & 30 & 80 \\\text { Female } & 30 & 20 & 7 & 120 \\\hline \text { Total } & 7 & 30 & 100 & 200\end{array}$$
a. What is the probability of selecting an individual who is majoring in Marketing?
b. What is the probability of selecting an individual who is majoring in Management, given that the person is female?
c. Given that a person is male, what is the probability that he is majoring in Management?
d. What is the probability of selecting a male individual?