Call all the people in analysis group A and all those in discrete are group B
The number of people in A and B is AUB
The number of people not in both is A + B - AUB = 361 + 223 - 188= 396
361 students at a university has taken a course in the analysis, 223 have taken a course in discrete mathematics, and 188 have read both courses. How many students at the university have taken a course in either analysis or discrete mathematics?
Hello, Petrus!
There is just barely enough information.
361 students at a university has taken a course in Analysis,
223 have taken a course in Discrete Mathematics,
and 188 have taken both courses.
How many students at the university have taken a course in either Analysis or Discrete Mathematics?
We can use this formula:
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Or we can place the information into a chart . . .
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And we can fill in more data . . .
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Therefore: .