Question

Let N be the set of distinct letters in the word “Nassau” and be the set of distinct letters in the word “Suffolk.”
a. Find the set (N U S) – (N ∩ S)

b. List all the subsets of N.

Answer 1

Do you know the set of N and S?

Answer 2

No I believe that's what I have to figure out as well. I'm just confused as to why the question is asking for both sets to be a set of N @geerky42

Answer 3

Pretty sure N is set of distinct letters in the word “Nassau”

and S is set of distinct letters in the word “Suffolk.”

Answer 4

whoops! you're right. S= set of Suffolk

Answer 5

@geerky42 So would the set of N = {n, a, s, u} and S= {s, u, f, o, l, k}?

Answer 6

That's right.

Answer 7

Here, N U S means set that contains all elements from either N or S.
N ∩ S means set that contains elements from BOTH set N and S.

Answer 8

So N U S = {n, a, s, u, f, o, l, k}, right?

And N ∩ S = {s,u}

Answer 9

Here (N U S) – (N ∩ S) is a set that contains elements from N U S that is NOT in N ∩ S

Can you figure what (N U S) – (N ∩ S) is?

Answer 10

is it {n, a, f, o, l, k} ? @geerky42