 Recent questions in Discrete math Anonym 2021-08-14 Answered

Define $$\displaystyle{S}={\left\lbrace{x}{\mid}{x}{b}\text{mod}{4}={3}\right\rbrace}$$ and $$\displaystyle{T}={\left\lbrace{y}{\mid}{y}{b}\text{mod}{2}={1}\right\rbrace}$$ Prove, S is a subset of T. Daniaal Sanchez 2021-08-14 Answered

A graph G is said to be regular if every vertex has the same degree. If this degree is equal to k, then G is k-regular. For example, K4 is 3-regular. a) Draw a connected graph with exactly 5 vertices that is 3-regular, or explain why this is not possible. Albarellak 2021-08-14 Answered

Find the summation for this: $$\displaystyle{\sum_{{{i}={1}}}^{{3}}}{\sum_{{{j}={3}}}^{{5}}}{i}=$$ UkusakazaL 2021-08-14 Answered

Whats the type of the following function in discrete math& $$\displaystyle{f}:{\left\lbrace{1},{2},{3},{4}..\right\rbrace}\rightarrow{R}$$ f(x) = 1/x ruigE 2021-08-14 Answered

Let f(n) be the largest prime divisor of n. Can it happen that x < y but f(x) > f(y)? Give an example or explain why it is possible. iohanetc 2021-08-14 Answered

Prove that discrete math: 1) If $$a|b\ \text{and}\ a|c\ \text{then}\ a|(b^2 - 4c)$$ 2) If $$a|b\ \text{then}\ a^2|b^2$$ Braxton Pugh 2021-08-14 Answered

A State University's Mathematics Department offers three courses: Calculus Linear Algebra, and Discrete Mathematics, and the chairperson is trying to decide how many sections of each to offer this semester. The department is allowed to offer 45 sections total, there are 5000 students who would like to take a course, and there are 60 teaching assistants to teach them. Sections of Calculus have 200 students each, sections of Discrete Mathematics have 100 students each, and sections of Linear Algebra have 50 students each. Calculus sections are taught by a team of 2 teaching assistants, while Discrete Mathematics and Linear Algebra need only 1 teaching assistant per section. How many sections of each course should the chair shedule in order to offer all the sections that they are allowed to, accommodate all of the students, and give one teaching assignment to each teaching assistant? a) The number of Calculus sections is $$\displaystyle{\left[{A}\right]}$$ b) The number of Linear Algebra sections is $$\displaystyle{\left[{B}\right]}$$ c) The number of Discrete Mathematics sections is $$\displaystyle{\left[{C}\right]}$$ BenoguigoliB 2021-08-13 Answered

$$\displaystyle\text{Let}{U}={\left\lbrace{p},{q},{r},{s},{t}\right\rbrace},{D}={\left\lbrace{p},{r},{s},{t}\right\rbrace},{E}={\left\lbrace{q},{s}\right\rbrace},{F}={\left\lbrace{p},{r}\right\rbrace},{\quad\text{and}\quad}{G}={\left\lbrace{s}\right\rbrace}$$ Determine whether the statement is true or false. $$F \subset D$$ Clifland 2021-08-13 Answered

Express the following in set-builder notation: a) The set A of natural numbers divisible by 3. b) The set B of pairs (a,b) of real numbers such that $$\displaystyle{a}+{b}$$ is an integer. c) The open interval $$\displaystyle{C}={\left(-{2},{2}\right)}$$. d) The set D of 20 element subsets of N. chillywilly12a 2021-08-13 Answered

Discrete Math Question Consider the relation R on Z defined by the rule that $$\displaystyle{\left({a},{b}\right)}\in{R}$$ if and only if $$\displaystyle{a}+{2}{b}$$ is even. Briefly justify your responses to the following. a) Is this relation reflexive? b) Is this relation symmetric? c) Is this relation transitive? postillan4 2021-08-13 Answered

Solve the following. a) Without using a truth table, verify that the argument form is valid. $$\displaystyle{p}\rightarrow{q}$$ $$\displaystyle{q}\rightarrow{r}$$ p $$\displaystyle\therefore{r}$$ b) Use quantifiers to write the statement "The square of every real number is positive. "Now, use quantifiers to negate the statement, and then determine whether the original statement or its negation is true. rocedwrp 2021-08-13 Answered

If $$\displaystyle{x}_{{{1}}}={2},\ {x}_{{{n}}}={4}{X}_{{{\left({n}-{1}\right)}}}-{4}{n}\forall{n}\geq{2}.$$ Find the general term $$\displaystyle{x}{n}$$ FizeauV 2021-08-13 Answered

Please Answer the following questions, Discrete mathematics Assume we have 15 different types of mobiles and 25 different types of books as gifts. We want to reward the best student with one of these gifts. How many choices do we have: 1) 40 2) C(25,15) 3) 375 4) P(25,15) Maiclubk 2021-08-13 Answered

Find a k such that the product of the first k primes, plus 1, is not prime, but has a prime factor larger than any of the first k primes. (There is no trick for solving this. You just have to try various possibilities!) ankarskogC 2021-08-13 Answered

Which one of the following quantifiers and predicates expresses the following statement, "There is a student in this lecture who taken at least one course in Discrete Math."? a) $$\displaystyle\exists\ {x}\exists\ {y}{P}{\left({x},{y}\right)}$$ where $$\displaystyle{P}{\left({x},{y}\right)}$$ is "x has taken y," the domain for x consists of all student in this class, and the domain for y consists of all Discrete Math lectures. b) $$\displaystyle\exists\ {x}\exists\ {y}{P}{\left({x},{y}\right)}$$ where $$\displaystyle{P}{\left({x},{y}\right)}$$ is "x has taken y," the domain for x consists of all Discrete Maths lectures, and the domain for y consists of all student in this class. c) $$\displaystyle\forall\ {x}\forall\ {y}{P}{\left({x},{y}\right)}$$, where $$\displaystyle{P}{\left({x},{y}\right)}$$ is "x has taken y," the domain for x consists of all student in this class, and the domain for y consists of all Discrete Math lectures. d) $$\displaystyle\exists\ {x}\forall\ {y}{P}{\left({x},{y}\right)}$$, where $$\displaystyle{P}{\left({x},{y}\right)}$$ is "x has taken y," the domain for x consists of all student in this class, and the domain for y consists of all Discrete Math lectures. Haven 2021-08-12 Answered

Is $$\displaystyle{2}\in{\left\lbrace{2}\right\rbrace}$$? mattgondek4 2021-08-12 Answered

Let L be an SList. Define a recursive function Wham as follows. B. Suppose L = x. Then Wham(L) = x · x. R. Suppose L = (X, Y). Then Wham(L) = Wham(X) + Wham(Y). Evaluate Wham (2, 4), (7, 9) , showing all work. lwfrgin 2021-08-12 Answered

Give the first six terms of the following sequences. You can assume that the sequences start with an index of 1. Logs are to base 2. Indicate whether the sequence is increasing, decreasing, non-increasing, or non-decreasing. The sequence may have more than one of those properties. a) The first two terms in the sequence are 1. The rest of the terms are the sum of the two preceding terms plus 1. b) The n-th term is $$\displaystyle{n}^{{{3}}}$$. c) The n-th term is $$\displaystyle{2}{n}-{5}$$. Phoebe 2021-08-12 Answered

Discrete Math Use a truth table to determine if the given argument form is valid. $$\displaystyle{p}\rightarrow{q}$$ $$\displaystyle{r}\rightarrow{p}$$ $$\displaystyle{q}\vee{r}$$ $$\displaystyle\therefore{q}$$ e1s2kat26 2021-08-12 Answered

How many elements will be there for $$\displaystyle{A}\times{B}$$ if $$\displaystyle{A}={\left\lbrace{a},{b},{c},{d}\right\rbrace}$$ and $$\displaystyle{B}={\left\lbrace{1},{2},{3},{4}\right\rbrace}$$ Select one: 1) 6 2) 2 3) 8 4) 16

Dealing with discrete Math is an interesting subject because discrete Math equations can be encountered basically anywhere from scheduling of sports games and live shows to education where each person is examined online. It is a reason why discrete math questions that we have collected for you are aimed at solutions that go beyond equations to provide you with the answers that will help you understand the concept. Still, discrete Math equations are explained as well by turning to problems in computer science, programming, software, and cryptography among other interesting subjects like software and mobile apps development.
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