1. Which of the following is NOT an example of a well-defined set?
a. Set of Philippine presidents
b. Set of best actresses in the Philippines
c. Set of COVID vaccines
d. Set of barangays in Naga City
2. Which of the following best illustrates the set of all primary colors?
a. {red, orange, blue
b. {violet, orange, green}
c. {red, yellow, blue)
d. {red, yellow, green, blue}
3. Given A = {m,a,t, h} and B = {m, a,p, e,h}, what is An B?
a. AnB = {m,a, h}
b. AnB = {m,a, t,p,e,h}
c. AnB = 0
d. AnB = {p.e,t}
4. Which of the following mathematical sentences shows the commutative property?
a. 4+ (-7) = -3
b. (3 + 4) + 2 = 3+ (4 + 2)
c. (-543) + 0 = -543
d. (-36) +8 = 8 + (-36)
5. Which of the following is NOT a rule in multiplying integers?
a. Multiplying two positive numbers will yield a positive product.
b. Multiplying two negative numbers will yield a negative product.
c. Multiplying two numbers with like signs give you a positive result.
d. Multiplying two numbers with different signs yields a negative result.​