INTRODUCTION AND INSTRUCTION Whatever we do and wherever we go, we always sort out things and put them in their proper places. We combine them according to their functions, uses, and category. Thus, we form groupings. In Mathematics, there is a term for this, and this is a set. Take note of the items in the Learning Activity that you find difficult to answer and you could consult your Math Teacher during the CT2L (Call/Text to Learn) session. After going through this supplementary learning material, you are expected to: Define well-defined sets and other terms associated to sets; write a set in two different forms; determine the cardinality of a set; enumerate the different subsets of a set; distinguish finite from infinite sets; equal sets from equivalent sets determine the union, intersection of sets and the difference of two sets Enjoy reading! MOST ESSENTIAL LEARNING COMPETENCIES illustrate well-defined sets, subsets, universal set, null set, cardinality of sets, union and . PRE TEST intersection of sets and the difference of two sets the statement is false. 1. TRUE or FALSE: Write the word True if the statement is true and the word False if 1. Set is a well-defined group of objects that share common characteristics. 2.4 is an element of set of even numbers. 3. Equal sets are always equivalent sets. 4. (a, b) = {c,d) 5. A set with 4 elements has 32 subsets II. MULTIPLE CHOICE: Write the letter that corresponds to the correct answer. 1. Which of the following is NOT a set.? A. Set of kinds of matters C. Set of even numbers B. Set of favorite subjects D. Set of counting numbers less than 15 2. What best describes the set {0,2,4,6,8,...) A. Set of all counting numbers divisible by 2 C. Set of all composite numbers B. Set of all whole even numbers D. Set of rational numbers 3. Describe the set of factors of 12 by Roster Method. A. {2,4,6,8) B. {2, 6, 12) C. {1,2,3,4,6,12) D. (1,2,3,4,5,6) 4. The cardinality of the set of counting numbers divisible by 3 and less than 15. A. 4 B.5 C. 6 D. 7 5. The set of consonants in the word "algebra". A. (a, e, b,r) B. {1.8.b,r) C.(a, e, 1.8) D.{lega) 6. Which of the following set is infinite? A. Set of even counting numbers B. {x/x is a month of year with 30 days) C. Set of odd numbers between 4 and 8 D. {X/x is a consonant in the English alphabet) (10, 20, 30, 40, 50, 60, 70, 80, 90, 100) 7. Consider the following sets: L = Mis a set of multiples of 10 from 10 to 100 and N = {x/x is a number from 5 to 50 that is divisible by 5). Which relation is FALSE? A. L is equal to M C. L is equal to N B. L is equivalent to M D. N is equivalent to 8. Nathaniel listed the set of all letter in the word "library" as shown below. What is wrong in his list? A = {1,1,b,r,a,r,y) 2