do the same thing but with this post. Scenario: A survey was taken of people at a local caf about their breakfast choices. Set A is the set of people who ordered pancakes. |A| = 45 Set B is the set of people who ordered waffles. |B| = 30 The survey found that 10 people ordered both pancakes and waffles. AB = 10 Using this information from the survey, we can apply the inclusion-exclusion principle to help us determine the union of the two sets. AB = A + B AB AB = 45 + 30 - 10 AB = 65 We now know the total number of unique individuals who ordered pancakes or waffles. If we would have simply added the two sets together, then we would have accounted for the 10 people who ordered both items twice. Applying the inclusion-exclusion principle allows us to correct for this double counting by subtracting the size of the inter