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Introduction to the Set Theory Flashcards | StudBud
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Introduction to the Set Theory
Introduction to the Set Theory
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20 Easy questions on the basic knowledge of Set Theories.
Flashcards
17 cards
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Questions
17
Answers
1
Can natural, integers, and rational numbers be categorized as real numbers?
No
Yes
2
What can be a subset for the number group Z?
R
Q+
N
Q
3
A={1,2,3,4,5,6} and B={1,3,5,7}, then A∩B is
{1,2,3,4,5,6}
{1,1,2,3,3,4,5,5,6,7}
{1,2,3,4,5,6,7}
{1,3,5}
4
Which of these is not an integer?
-0.9
3
-2
5
5
If set A = {x | x∈Z
+
}, then
-6∈A
56∈A
2∉A
n(A)=∅
6
What does the symbol "{}" represent?
Set
Equal
Subset
None of the choices
7
Which is not a rational number?
1.5
7
square root of 2
.5
8
The smallest possible number set for √2 is...
Z
Q
N
R
9
What is the closest definition to natural numbers?
None of the above
Natural number does not have to only be positive
Natural numbers are all positive numbers, starting from one
Natural numbers are real numbers
10
What number set is represented by Q?
Integers
Irrational numbers
Real numbers
Rational numbers
11
Are all rational numbers real numbers?
Yes
No
12
What is the closest definition of integers?
Natural numbers
Numbers that consist of positive and negative
All existing numbers
All numbers ranging from 0 - infinity
13
Which numbers would belong to the set {-3 <x ≤ 3, x∈Z}
{-2,-1,0,1,2,3}
{-3,-2,-1,0,1,2,3}
All numbers between -3 and 3
All numbers that are fractions and are between -3 and 3.
14
Which of these are subsets for odd numbers?
4, 5, 6, 7
1, 3, 5, 7
2, 4, 6, 8
1, 2, 6, 7
15
Which categories can go into a "Subject" set?
chairs
Math
Clothes
SAT
16
What is the closest definition to rational numbers?
Numbers that can be turned into fractions
Numbers that includes both positive and negative
All positive numbers
All positive real numbers
17
Which one of these are real numbers?
1
All The Above
3
0.5
