Question 426914
P(A in Math OR A in Stats) = P(A in Math) + P(A in Stats) - P(A in Math OR A in Stats) = 0.51 + 0.67 - 0.41 = 0.77, the probability that she receives an A in statistics or mathematics (or both). 

It's called the General Addition Rule of Probability.  No need for Venn Diagrams here.