To find:
Find the probability that the student was male AND got a "B".
SOlution:
There are total of 50 students. If we select one student at random then there are 3 students who are male and got a B. So, the required probability is:
[tex]P(M\cap B)=\frac{3}{17}=0.176[/tex]Thus, the answer is 0.176.