888 Answered Questions for the topic discrete math

Discrete Math Math Set Theory Power Sets

10/05/21

Is this website correct about p(∅)?
I am learning about power sets.I know that p(∅) = {∅} or {{}}.That is a little confusing to me, so I used an online calculator (https://www.mathsisfun.com/sets/power-set-maker.html). After putting... more
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Discrete Math Math Stats

10/03/21

ASAP: determine all the winning coalitions and find banzhaf power distribution
determine all the winning coalitions and find banzhaf power distribution (Show all work)[16:5,5,11,6,3]
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09/30/21

Number of Positive Factors Question
Hello, I was trying to figure out if the number 4294967297 was prime or composite. I figured out the answer is composite and that it is divisible by 641, but it took me longer to figure out than I... more
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09/25/21

Let f: A→B be a function, and X⊆A.Prove or disprove: f(f^−1(f(X)))=f(X).
More clearly written: Let f: A→B be a function, and X⊆A.Prove or disprove: f(f-1(f(X)))=f(X).I'm not sure where to even begin with this question...
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Discrete Math Proofs

09/20/21

Could someone help me on this Proof please?
We went over this question today in class and I don't understand it. Could someone help?Let a and b be integers. Prove that a<b if an only if a≤b-1What I did was rename a and b, x and x+1... more
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Discrete Math

09/17/21

Define a function

Define a function that you might see in a calculus class. Simple functions will not score all points. Your function should have atleast three features. Please identify these features in writing.
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Discrete Math

09/17/21

How Do I solve this?

Prove the following using RULES of INFERENCE/REPLACEMENT:.11) P → Q 2) 2)R → S 3) דQVדS——————:.דP ד ٧R
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Discrete Math Computer Science

09/12/21

monte hall question
Suppose you are a participant in a game show. You have a chance to win a motorbike. You are askedto select one of the 500 doors to open; the motorbike is behind one of the 500 doors; the other... more
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Discrete Math

09/07/21

Discreate mathematics

Is there any one who can help me past of days or weeks 🥺 I didn't get answer from here plz respond anyone for probability questions : A box contains 17 balls of each color (i.e., green, red, and... more
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08/19/21

Expected Value question: If E (Y) = 6, then E (6Y - 4) =
If E (Y) = 8, then E (6Y - 4) =
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08/19/21

Variance question: If V (Y) = 6, then V (2Y- 4) =
If V (Y) = 6, then V (2Y- 4) =
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Discrete Math

08/19/21

a worked works 40 hrs per week and earns 19.50, estimate annual income
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Discrete Math Math Maths

08/18/21

Fundamentals of Mathematical Logic
You meet three inhabitants of Davison's Island and have the following talk. Can you tell which inhabitants (if any) are lying?A says, “Exactly one of us is telling the truth.”B says, “We are all... more
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Discrete Math Maths Math Question

08/18/21

Prove that, if x*y = z^2 and x < z then y > z, for any positive numbers x, y and z.
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08/16/21

Law of Variance question: If V (Y) = 12, then V (4Y - 8) :
If V (Y) = 12, then V (4Y - 8) ?
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08/11/21

Discrete Math (Urgent)

Question : Suppose that A and B are finite sets. Prove that A × B is finite.Book : Set Theory (0th)-CunninghamChapter 5.1 and problem number 20 and page no. 116
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08/11/21

Discrete Math (Urgent)
Question : Suppose that f : A → B is onto B where A is finite. Prove that B is finite.Book :... more
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08/11/21

Discrete Math (Urgent)
Let A be a finite set. Prove that there exists an f : n → A that is onto A for some n ∈ ω.
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08/11/21

Discrete Math Question (Urgent)
Let n ∈ ω. Suppose that f : n → A is onto A. Prove that A is finite.
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Discrete Math Discrete Mathematics

07/27/21

discreate mathmatics

Express the following English statement using quantifiers and find out the negation of the quantifiedexpression. Convert the negation of the quantified expression into English statement.“All the... more
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Discrete Math

07/15/21

Clustering Coefficient
What makes a clustering coefficient larger or smaller? What does a larger coefficient tell me?
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Discrete Math

07/13/21

Graph Theory/ Maximum Likelihood/ Probability
Suppose we draw n independent random reals x in the range 0≤x≥∞ from the (properly normalized) exponential probability density P(x)=µe-µx.a) Write down the likelihood (i.e. the probability density)... more
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Discrete Math

07/09/21

Question about an arrow diagram
My question is this, I understand how to find the S diagram, once I find the cartesian products and do x < y which explain all the arrows in the S diagram. However, I do not understand the T... more
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Discrete Math Data Structures

06/09/21

Proving this Statement
Use the definition of Big-Oh to prove that following statement:Suppose T1(N) = O(f(N)) and T2(N) = O(f(N)), T1(N) + T2(N) = O(f(N))
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Discrete Math

06/08/21

Graph in discrete math
i) What is a graph?ii) Draw a simple graph with 6 vertices and 7 edges?iii) What is the degree of a vertice in graphs?iv) What is a complete graph?v) Find the number of edges of a complete graph if... more
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