I
H Н
DIRECTION: Shade the letter of the best answer in the
1. Which of the following is well-defined set?
a. popular actresses
c. beautiful sceneries
b. favorite fruits
d. vowels in the alphabet.
2. Set G=(multiples of 4). Which of the following is NOT true about set G?
a) 46 G
b. 6EG
G c. 8 EG d. 12 EG
3. Describe the set of integers using roster notation.
a. B= (1,2,3,4,5,...}
c. B={-1,-2,-3,-4,-5)
b. B= {2,4,6,8,10}
d. B= (x/x is integers)
4. How will you describe set C= (January, February, May, July) using set-builder notation?
a) C= (x/x is a month of a year with 30 days)
b) C= {x/x is a month of a year with 31 days)
c) C= {x/x is a month of a year ends with letter Y}
d) C= [x/x is a month of a year with letter U in its name}
5. Which is the best method to describe the set of presidents in the Philippines up to
present?
a) Roster notation
c. Both a and b
b) Set-builder notation
d. None of the above
6. Set C= {red, orange, yellow, green, blue,}, what is the cardinality of set C?
a. 6
b. 5
d. 4
7. Which of the following set is an example of empty set?
a) H={quadrilaterals}
c. D={days of a week starts with A}
b) C= {1,2,3,4,5,6,7,8, ...} d. D= {days of a week ends with y}
8. Which of the following is a finite set?
a.
c. 3, 6, 9, ...)
b. {..., -3, -2,-1, 0, 1, 2, 3, ...} d. set of positive numbers
9. Which of the following statement is TRUE?
a. Empty set contains an element c. Finite set is a null set
b. Cardinality of null set is always zero d. Infinite set has cardinality
For numbers 10-12, refer to the given inside the box
c. O
Given: U={x/x is an integers from -5 to 10),
A = {-5, -4,-3, -2, -1}
B = {1,2,3,4,5,...,10}
a. {-5, -4,-3, -2,-1, 1, 2, 3, 4, 5, ..., 10}
b. {-4, -2,0, 1, 2, 3, 4, 5, 6, 8, 10}
c. {-4,-2,0}
d.{}- disjoint set​