1. **D**: The overlap of the two sets represents the intersection, which is the set of elements common to both sets <em>M</em> and <em>C</em>. In this case, it's the set {4, 5, 6}.

2. **D**: <em>P</em> is the set of the first 100 multiples of 8 (8*1 = 8, 8*2 = 16, and so on)

3. **C**: <em>n</em>(<em>A</em>) represents the number of elements in the set <em>A</em>. When

that means the sets <em>A</em> and <em>B</em> are disjoint, represented by the two circles with no overlap.

4. **E**:

is the set of elements belonging to either set <em>A</em> or <em>B</em>. The three elements of <em>A</em> are all in <em>B</em>, so <em>A</em> is a subset of <em>B</em>. This means .

Because <em>A</em> is a subset of <em>B</em>, we have .

is the complement of , which refers to the set of elements *not* belong to . These are all the numbers in <em>U</em> that are not in this union, which would be .

Because we know , we have .