Home Quiz The Annotations Of Set Theory
Preview (10 questions)
1 Question
30秒前
Q.

What is the formula of n(A∪B)?

n(A) + n(B) – n(A ∩ B)

n(A) + n(B) + n(A ∩ B) 

n(A) + n(B) * n(A ∩ B)

n(A) - n(B) – n(A ∩ B)
2 Question
30秒前
Q.

What defines the Complement Law?

A ∪ A' = +U 

A ∪ A = -U 

A ∪ B' = U

A ∪ A' = U 
3 Question
30秒前
Q.

 What is the formula for the intersection of sets?

A ∩ B = {x : x ∈ A and x ∈ B}

A ∩ B = {x : x ∈ B and x ∈ A} 

B ∩ A = {x : x ∈ A and x ∈ B}

A U B = {x : x ∈ A and x ∈ B}
4 Question
30秒前
Q.

What is the Cartesian product of sets?

A × B 

B x A

A × C

B x C
5 Question
30秒前
Q.

What is the Set Formula For Complement?

B' = U - B

C' = U - C

A' = U - A

A' = U - B
6 Question
30秒前
Q.

What is the name of the formula A Δ B = (A - B) U (B - A)?

Difference

Complement

Cartesian

Intersection
7 Question
30秒前
Q.

What is the Formula for the empty set?

X ∩ ∅ = X

A ∩ ∅ = A

B ∩ ∅ = B

A ∩ ∅ = B
8 Question
30秒前
Q.

Which of the following is the De Morgan's Laws?

(A ∪B)' = A' ⋂B'

(B ∪A)' = B' ⋂A' 

(A ∪B)' = B' ⋂A'

(B ∪A)' = A' ⋂B'
9 Question
30秒前
Q.

How many formulas are there in the sets?

5

6

3

4
10 Question
30秒前
Q.

When was the set theory invented?

1985

1983

1874

1898