161 Answered Questions for the topic Sets

04/01/22

#### Question on probability/sets

You have a basket containing 7 red balls, 5 green balls, and 2 orange balls. You pick 5 balls at random. What is the probability of getting at least one red ball?

04/01/22

#### Struggling on this problem retaining to sets

Let the Universal Set, S, have 100 elements. A and B are subsets of S. Set A contains 45 elements and Set B contains 61 elements. If Sets A and B have 20 elements in common, how many elements are... more

03/18/22

#### What is A' ∩ (B-C)?

Let A = {1,2,3,6,7} B= {2,4,5,7} and C = {2,4,6} and U = {1,2,3,4,5,6,7,8}a. {6}b. {5}c. {}d. none of theseI have answered B. {5} am I correct?

11/29/21

#### Relation Maths Question

Prove that the relation ℝ ={(a,b) | a divides b} {Z}^+ is not an equivalence relation. ( 4 marks )

05/29/21

Sets Math

05/02/21

#### Set Problem that I can't solve

A ∈ B, B ⊆ C, C ∈ D is A ⊂ D?

03/20/21

#### Negation with quantifiers

Q. Write down the negations of the following statements: a. Every news site reported on the Winter Olympics. b. There is some real number which is larger than any integer. c. For all nonzero real... more

11/19/20

#### How many elements are contained in the set (1,5) \ {1}?

How many elements are contained in the set (1,5) \ {1}?
Sets

09/04/20

#### how to find these sets?

U= {a,b,c,d,e,f,g}A= {c,d,e,f}B= {d,e,g}what is:1. A'2. B'3. A∪B'4. B∩C'

05/12/20

#### Logics, Sets, Karnuagh Maps, Boolean Logic Customer Reviews

Let the universal set U be the following set of 16 countries:  U = {Angola, Benin, Chad, Djibouti, Eritrea, Ghana, Kenya, Libya, Mali,           Namibia, Rwanda, Sudan, Tanzania, Uganda,... more
Sets

01/18/20

#### All the sets possible

I can eat at USA, France and Italy i can eat at some all or none what are all the sets
Sets

08/19/19

#### If A intersection B' is null set prove that A is subset of B

About sets identities and proof of sets
Sets Algebra 2

07/14/19

#### How to rewrite, having trouble.

How to rewrite set G using elements G= y|y is an integer and 3≤Y<5
Sets Algebra 1

06/07/19

Sets Algebra 1

12/12/18

#### Algebra and sets math problem

Suppose A = {x |x ≤ −2, x ≥ 3} and B = {x | −1 ≤ x < 5}. Which statement is true? A.-A ∪ B is all real numbers B.-A ∩ B = ∅ C.-A' = {x | −2 ≤ x ≤ 3} D.-B ⊆ {x | x ≤ 5} NEED ANSWER QUICK
Sets

09/02/18

#### What are two different signs for sets ?

What are two different kinds of sets
Sets

08/17/18

#### Sets of whole numbers greater than 8

Indicate the the following set by the listing method.  Whole numbers greater than 8

07/05/18

#### n(A intersection B) =0. I want to ask what the n here means

and if we’re given with a statement of union or intersection with this n then how do we find the conditio? Thank you
Sets

07/05/18