Please find the question below:

Question

In a group of 200 graduate engineering students 100 are enrolled in an advanced course in

statistics 50 are enrolled in a course in OR and 30 are enrolled in both. How many of these

students are not enrolled in either course?

Answer 1

200 total

100 in AC

50 in OR

30 in both

how many in neither?

draw a Venn diagram, a rectangle and inside are two overlapping circles

the overlap = 30, 100-30 = 70 students are taking only AC 50-30 = 20 who only take OR

200-30-70-20 = 80 take neither