
UNESCO LS3
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Medium
Soriano Anne
Used 3+ times
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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following do not belong to the group of numbers?
Two
four
three
six
Answer explanation
Two: This is an even number.
Four: This is also an even number.
Three: This is an odd number.
Six: This is an even number
Two: This is an even number.
Four: This is also an even number.
Three: This is an odd number.
Six: This is an even number
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a set of even integers?
{ 2, 4, 6, 7 }
{ 1, 3, 5, 7 }
{ 2, 4, 6, 8 }
{ 1, 2, 3, 4 }
Answer explanation
The set { 2, 4, 6, 8 } contains only even integers, as they are all divisible by 2. The other sets include odd integers or a mix of odd and even, making { 2, 4, 6, 8 } the only correct choice.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Let B = { 6, 9, 12 } and C = { 6, 12, 18 }. What is B ∪ C?
{ 6, 9, 12, 15 }
{ 6, 9, 12, 18 }
{ 6, 9, 15, 18 }
{ 3, 9, 12, 18 }
Answer explanation
The union of sets B and C combines all unique elements from both sets. B = {6, 9, 12} and C = {6, 12, 18}. Thus, B ∪ C = {6, 9, 12, 18}, making the correct answer {6, 9, 12, 18}.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Let X = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 } and Y = { 2, 4, 6, 8 }. What is X ∩ Y?
∅
{ 1, 3, 4, 5, 7 }
{ 2, 4, 6, 8 }
{ 0, 1, 3, 9 }
Answer explanation
The intersection X ∩ Y includes elements common to both sets. Here, Y = {2, 4, 6, 8} consists of even numbers, all of which are present in X. Therefore, X ∩ Y = {2, 4, 6, 8} is the correct answer.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a number line, what are the integers on the left of 0?
Decimals
Positive integers
Fractions
Negative integers
Answer explanation
On a number line, integers to the left of 0 are negative integers. They are less than zero, while positive integers are to the right of 0. Decimals and fractions are not integers.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If A = 2, what is the integer 4 units to the right of A?
2
4
6
8
Answer explanation
To find the integer 4 units to the right of A (which is 2), you add 4 to A: 2 + 4 = 6. Therefore, the correct answer is 6.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following expression represents “x is greater than −3”?
x > −3
x ≥ −3
x < −3
x ≤ −3
Answer explanation
The expression "x > -3" correctly represents that x is greater than -3.
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