Draw a Venn diagram or use the inclusion/exclusion principle to show that
there are 70-30=40 students passed only math, and 56-30=26 students passed only statistics.
So there is a total of 40+26=66 students who passed only one subject.
So what is the probability of randomly choosing one student from a class of 125 such that this student is one of 66 who passed only one subject?
In class of 125 students, 70 students passed in Math, 56 students passed in Statistics, and 30 passed in both. The probability that a student selected at random from the class, has passed in only one subject is
2 answers
u6