1. ## Quick Question about set Operation!!

Question:
Let A = {a, b, c, d, e} and B = {a, b, c, d, e, f}. Find A - B and B - A?

How would I do A - B since both have similar letters besides the f in B? What I am seeing in A - B is everything in A but not in B. So would the answer be 0 for A - B? If so would I write it as {0}?

2. $A\backslash B = \emptyset \;\& \;B\backslash A = \{ f\}$

3. Originally Posted by Plato
$A\backslash B = \emptyset \;\& \;B\backslash A = \{ f\}$
I knew what B - A was. So it would automatically be an empty set then for A - B. I gotcha now.

Thanks Plato