Sets

The Venn diagram shows the numbers of elements in each region of the universal set \(\xi\).

Find:

1. \(n(A\cap B')\);

2. \(n(A'\cup B)\);

3. \(n((A\cap B)')\);

4. \(n((A\cup B)')\);

5. \(n((A\cap B')\cup(A'\cap B))\).

6. Explain why the answers to parts (c) and (e) differ by \(5\).