What's More 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?

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