Abe Mirza Test 1 Review & Practice Math 1. List all the elements for: 1. B C 2. B A 3. C B. Draw the Venn diagram and shade the proper region for,
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1 Abe Mirza Test 1 Review & Practice Math 1 Let = {,,, a c e g, k, m, p,} s A= {,,,} a c e k B = {, ck, ps,} = {, k m, p} List all the elements for: 1. B 1) 2. B A 2) 3. B 3) 4. A ( B ) 4) 5. A ( B ) 5) 6. B ( B ) 6) Draw the Venn diagram and shade the proper region for, 7. A ( B ) 8. ( A B ) 9. What is the formula to find the number of subsets for any given set? 9) 10. What is the formula to find the number of proper subsets for any given set? 10) If A = { 1, 2, 5, 7} and, B = { 6,3,9} and, { 4,8} = then find 11. na ( B) 12. na ( ) 13. nb ( ) 14. Find B 15. Find B 16. Is B = B? 1
2 A survey of a 150 students at SS showed that, 61 like Rock & Roll 54 like Jazz 57 like lassics 9 like both Rock & Roll and Jazz 15 like both Jazz and lassics 17 like both Rock & Roll and lassics 5 like all three subjects Find the number of students who: 17. like none of these subjects 18. like Jazz only 19. like Jazz or lassics, but not both 20. don t like Jazz. 21. Is ( A B) B Always True? 22. Is ( ) A B B always True? 23. Define and give two examples for well defined sets and not well defined sets. 24. Define and give two examples for equal and equivalent sets. 25. What is the difference between a subset and a proper subset, also provide some examples. Good Luck 2
3 Math 1 Practice Test 1- Part 2 Show your work whenever appropriate for full credit. Name 1.Write the following {0, 1, 2,, 10} in set-builder notation. 2. Write out the set {x: x is an integer less than 4} in roster notation. 3. How many subsets of {a, b, c, d, e, f, h, i} are there? Show how you determined it. 4. Write each of the following in set builder notation. a. {0, 1, 2, 3, 4, 5, 6, 7} b. {January, February, March, April, May} 5. Given = {1, 2, 3, 4, 5, 6, 7, 8, 9}, A = {2, 4, 6, 8}, B = {1, 3, 4, 5, 7} = {7, 8} find: a. A B b. B c. A B d. A B e. (A ) (A B) 6. List all the subsets of {t, i, m}. 7. inthia has 237 minutes remaining on her cell phone this month and wants to use them about equal to call her 11 good friends. Show how to use compatible numbers to determine the number of minutes she can talk to each of her friends. 7.
4 8. What does the shaded region in each figure below represent in set notation? 9. Illustrate each of the following by shading the Venn diagrams below. a. S K b. (T M) S K T I M 10. se the diagram below to find the cardinality for each problem. R 9 E N a. n(n) = b. n[(r E) N] = c. n(e ) = d. n(e R) e. n() f. n(r E N)
5 11. Tell whether each statement is true or false, if false correct the statement to make it true. a. All sets that are equal are also equivalent. b. A B = (A B) (Hint: try it using the elements in problem 5 of this test) c. If set F = {1, 2, 3} and set G = {2, 3, 1} then F G. d. For any set = { }. e. The number of proper subsets of a given set is one less than the number of subsets for that same set. f. n(t L) = n(t) + n(l) 12. se the Venn diagram below to fill in the missing statement M a. n(m ) = b. n( ) = se the Venn diagram to work the following problem in three steps A (B ). A B A B A B
6 14. Fill in the blanks with one of the following,,,,, or to make each statement true (1 pt/problem). a. { } {2, 4} b. Whole Rational numbers c. 2 Naturals numbers d. -6 {x:x is a solution to the equation x 2 = 36} 15. There were 100 students in the library who responded to how they completed their research paper. 18 students only used the periodicals 29 students used the web and books 15 students used books, the web, and periodicals 40 students used books and periodicals 20 used the web and periodicals 60 students used books 7 students did not use the web, nor books, nor the periodicals. a. Represent this information with a Venn diagram. b. How many students used the web in their research? c. How many students used books or periodicals? b. c.
7 16. oncerning the first 41 presidents of the nited States we know the following facts: Eight held cabinet posts, 14 served as vice-president, 15 served in the.s. Senate, 2 served in cabinet posts and as vice-president, 4 served in cabinet posts and in the.s. Senate, 6 served in the.s. Senate and as vice-president, and 1 served in all three positions. How many presidents served in: a. none of these 3 positions? b. only in the.s. Senate? c. at least one of the three position? d. exactly two positions? 17. List the numbered regions that make up the answer to each of the following: I II A III IV V VI VII VIII B a. A = b. B A = c. A (B ) d. (B A)
8 18. se DeMorgan s Laws and set operations to write the shaded region in two different ways. D M 19. A pizza chain is willing to pay $0.75 to each person interviewed about his or her likes and dislikes of types of pizza crust. Of the people interviewed, 220 liked thin crust, 270 liked thick crust, 70 liked both, and 50 did not like pizza at all. What was the total cost of this survey? In a survey of 130 people, the following data were collected: 106 people subscribed to the newspaper, 29 people subscribed to magazines, and 17 people were members of a mail D club. Seventeen subscribed to both the newspaper and the magazines, 5 people subscribed to magazines and were members of a D club, and 10 people subscribed to the newspaper and were members of a mail D club. Three people subscribed to both the newspaper and magazines and were members of a mail D club. Make and fill in a Venn diagram to illustrate this situation. Bonus Problem: Explain the Three-Way Principle.
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