Illustration of Communicates his/her mathematical thinking coherently and clearly to peers, teachers, and others in the ICLE's Rigor and Relevance Framework
Quadrant C

Suppose that B = {3, 6, 9, 10, 15}, C = {1, 3, 4, 6, 8} and D = {2, 3, 4, 8, 10, 12}. Find B C D, B big union C big union D, and B big union (C - D).

 Quadrant D

Logical operators are used by many Internet search engines. Research at least three of these search engines' Websites (ie. Google, Alta Vista, etc...) for information about what logical operators they use. (Hint: Check the Advanced Search link.)
Determine which logical operators are most common to the search engines you researched. For each of the operators, describe an Internet search that would involve that operator.
Determine which logical operators are unique to a specific search engine. For each of these operators explain why you think this search engine includes this operator and the others do not.
Do any of the search engines have a logical operator that they "default" to? If so, explain why this would be the case.
Quadrant A

Suppose that C = {1, 3, 4, 6, 8} and D = {2, 3, 4, 8, 10, 12}. Find C un union D.

 Quadrant B

Alice conducted a survey of her friends and found that Sam, Juan, Hannah, Ryan, and Jesse liked using Google for Internet searches. Holly, Sam, Jesse, Finley, and Alex preferred using AltaVista as their search engine. How many of Alice's friends like both search engines? Use set notation to show and explain your solution.