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?

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- Oct 27th 2012, 08:43 AMPetrusWords problem nr2
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?

- Oct 27th 2012, 09:00 AMShakarriRe: Words problem nr2
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 - Oct 27th 2012, 09:09 AMPetrusRe: Words problem nr2
thats so logic just ohh well dont know why i thought like u :s

- Oct 27th 2012, 09:27 AMSorobanRe: Words problem nr2
Hello, Petrus!

There is just barely enough information.

Quote:

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:

. .

Or we can place the information into a chart . . .

. .

And we can fill in more data . . .

. .

Therefore: .