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A winter resort took a poll of its 350 visitors to see which winter activities people enjoyed. The results were as follows: 178 people liked to ski, 154 people liked to snowboard, and 49 people liked to ski and snowboard. How many people in the poll liked to ski or snowboard?

Describe the Venn diagram for two disjoint sets. How does this diagram illustrate that the sets have no common elements?

Describe the Venn diagram for proper subsets. How does this diagram illustrate that the elements of one set are also in the second set?

Describe the Venn diagram for two equal sets. How does this diagram illustrate that the sets are equal?

Describe the Venn diagram for two sets with common elements. How does the diagram illustrate this relationship?

Describe how to find the cardinal number of the union of two finite sets.

\(A \cup B=B\)