B-A= {2, 4, 6} B- A = {5,6) Remember: Do not duplicate or repeat elements. DISTINCT! E What's More EB. from a. E B. I. Try These! 1) Identify whether the given set is a well-defined or not. Factors of 50 d. All multiples of 5 b. Even number e. Nice people in your class c. Happy children 2) By Roster Notation, list the elements of the following sets. a. T = {x/x is the day of the week that starts with the letter T} b. H= {x/x is a counting number between 10 and 20} 3) Write a verbal description for each of the following sets. a. V = {January, February, March, ..., December } b. E= {1, 3, 5, 7, ...} 4) Write a rule, by Set Builder Notation, for the following sets. a. S = {3, 6, 9, 12, ..., 30} b. R = {Sunday, Saturday} 5) Given set A containing all the letters of the English alphabet: a. Write set A in Roster Notation. b. Write subset B containing all vowels of the English alphabet. c. What is the cardinality of the powersets of sets A, B, and C? IL Keep Trying! 1
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