Preview (10 questions)
1 Question
30 másodperce
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 másodperce
Q.

What defines the Complement Law?


A ∪ A' = +U 

A ∪ A = -U 

A ∪ B' = U

A ∪ A' = U 

3 Question
30 másodperce
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 másodperce
Q.

What is the Cartesian product of sets?


A × B 

B x A

A × C

B x C

5 Question
30 másodperce
Q.

What is the Set Formula For Complement?


B' = U - B

C' = U - C

A' = U - A

A' = U - B

6 Question
30 másodperce
Q.

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


Difference

Complement

Cartesian

Intersection

7 Question
30 másodperce
Q.

What is the Formula for the empty set?


X ∩ ∅ = X

A ∩ ∅ = A

B ∩ ∅ = B

A ∩ ∅ = B

8 Question
30 másodperce
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 másodperce
Q.

How many formulas are there in the sets?


5

6

3

4

10 Question
30 másodperce
Q.

When was the set theory invented?


1985

1983

1874

1898