In set notation this is B = {1, 4, 9}. 30 people answered a survey about whether they have a dog or a cat. The Venn diagram shows the information from the survey. 13 people have got a dog.

Focus on the data in the Venn diagram, not on its appearance. Provide the data in brief statements. Give a summary if one is immediately apparent. Include the caption only if it is not accessible from ...

Venn recognized that he could use the two circle representation of each of the premises in the three circle diagram and what ...