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How would I go about solving this?

We are starting to learn about venn diagrams so would creating a venn diagram be helpful?

This is what I tried so far, I created a set C consisting of all people who have taken calculus and a set D consisting of all people who have taken discrete math.

|C| = 331

|D| = 217

and

|C^D| = 199.

How can I determine the value of |C or D|?

|C^D| = number of people who have taken D and C

|C or D| = number of people who have taken D or C.

We are starting to learn about venn diagrams so would creating a venn diagram be helpful?

This is what I tried so far, I created a set C consisting of all people who have taken calculus and a set D consisting of all people who have taken discrete math.

|C| = 331

|D| = 217

and

|C^D| = 199.

How can I determine the value of |C or D|?

|C^D| = number of people who have taken D and C

|C or D| = number of people who have taken D or C.