solution MULTIPLE CHOICE: Read each item carefully and choose the best answer among the options. Write only the letter on your answer sheet.

1. Which of the following is a well-defined seil

a. set of best basketball players
c. set of intelligent teachers in your school
b. set of beautiful flowers
d. set of primary colors

2. If A = {a,b,c,d,e) and B = {a,c,e}, which of the following is true?
a. ACB
C. DEB
b. BCA
d. n(A) = 3

3. If C = {1,2,3,4,5) and D = {x|x is an even number from 1 to 10). What is CO DO
a. (2,4)
C. { 2,4,6,8,10 )
b. (1,2,3,.,10)
d. (1,3,5,7,9)

4. Which of the following is NOT true?
a. AUB = BUA
b. AnB = BOA
C. A-B = B-A
d. (A'' = A

5. Which set represents A-B?
a. (1,3,5)
b. (1,3,5,6,8,10)
c. {2,4)
d. (6,8,10 )

6. What is A' B' ?
a. (6,7,8,9,10)
b. {2,4)
c. {}
d. 17,9)

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