Showing posts with label SAT Venn Diagram. Show all posts
Showing posts with label SAT Venn Diagram. Show all posts

Thursday, November 22, 2012

Venn Diagram

SAT Venn Diagram, systems of equations Problem: In a survey of 200 pet owners, each person has a dog or a cat or both. If there are 180 dog owners and 160 cat owners. How many of the cat owners have no dogs?