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Recent questions tagged discrete

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Çșȇ ʛấẗẻ asked in Mathematical Logic Aug 1, 2023

by Çșȇ ʛấẗẻ

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TIFR System Science 2018 Question 1
Consider a discrete-time system which in response to input sequence x[n] (n integer) outputs the sequence y[n] such that $y[n] = 0, n = −1, −2, −3,...$ and $y[n]=2 (y[n − 1] + nx[n]), n = 0, 1, 2,...$. Find out if the system is linear and time-invariant.

analyse asked in Digital Signal Processing Nov 22, 2022

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Discrete mathematics #TEST_BOOK
I Have doubt about the language. Is it asking about the sum of elements if we make the GBL set for the given lattice .

Shawn Frost asked in Set Theory & Algebra May 20, 2019

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Discrete Mathematics
I doubt Whether (a,b)R(b,c) is symmetric or antisymmetric or reflexive relation And how to approach this type of sums?

Ritabrata Dey asked in GATE Application Mar 21, 2019

by Ritabrata Dey

330 views

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1 answer

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generating function

Rahul_Rathod_ asked in Combinatory Jan 15, 2019

by Rahul_Rathod_

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#Combinations
Number of ways of splitting 10 people into 2 teams of 6 and 4 people respectively. Answer- $^{10}c_{6}$ Number of ways of splitting 10 people into 2 teams of 5 people each. Answer – $^{10}c_{5} /2$ Please explain why we divide by 2?

Nymeria asked in Combinatory Dec 14, 2018

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1 answer

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kenneth rosen
Each user on a computer system has a password, which is six to eight characters long, where each character is an uppercase letter or a digit. Each password must contain at least one digit.how many possible passwords are there? I understand sum rule will be applied adding ... how we will ensure password will contain one digit? in rosen solution P6 = 36^6 - 26^6 why they did like this?

Nancy Pareta asked in Quantitative Aptitude Sep 12, 2018

by Nancy Pareta

3.4k views

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Kenneth Rosen Edition 6th Exercise 1.3 Example 23 (Page No. 42)
Express the statement Every student in this class has studied calculus using predicates and quantifiers. Solution: First, we rewrite the statement so that we can clearly identify the appropriate quantifiers to use. Doing so, we obtain: For every ... its C(x) not C(calculus). So, the value is not given as input there. Then why now?

Sandy Sharma asked in Mathematical Logic Jul 3, 2018

by Sandy Sharma

5.2k views

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1 answer

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#Graph Theory Any Simple way to prove this ?
A connected graph ‘G’ may have at most (n–2) cut vertices.

iarnav asked in Graph Theory Apr 9, 2018

by iarnav

460 views

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1 answer

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MCQs in Computer Science - Timothy Williams
The $n^{th}$ order difference of a polynomial of degree $n$ is zero one some constant undefined Please explain the solution.

Shikha Mallick asked in Set Theory & Algebra Mar 12, 2018

by Shikha Mallick

812 views

3 votes

2 answers

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Kenneth Rosen Edition 6th Exercise 5.3 Example 14 (Page No. 360)
How many bit strings of length $n$ contain exactly $r$ $1's$?

Lakshman Bhaiya asked in Combinatory Feb 28, 2018

by Lakshman Bhaiya

1.3k views

1 vote

1 answer

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nikkey123 asked in Mathematical Logic Jan 4, 2018

231 views

3 votes

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Self Doubt
Let < G, * > be a finite group and let H1 and H2 be it's sub group as per lagrange theorem we know order of sub group divides order of group, my doubt is, is it possible that we can have multiple subgroup of same cardinality for a particular group ? $\left | H1 \right |=\left | H2 \right |$

Tesla! asked in Set Theory & Algebra Oct 21, 2017

by Tesla!

348 views

1 vote

1 answer

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Discrete
What is the upper bound for the Chromatic Number given by Brooks' theorem for the Petersen graph? (a) 2 (b) 3 (c) 4 (d) None of the above

mathematics asked in Others Oct 19, 2017

318 views

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Discrete
If G is a Cubic Hamiltonian graph, then χ′(G)= (a) 3 (b) 4 (c) 5 (d) None of the above

mathematics asked in Others Oct 19, 2017

1.7k views

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1 answer

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Discrete
Find the Chromatic Index of the graph G given below. (a) 3 (b) 4 (c) 2 (d) None of the above

mathematics asked in Others Oct 19, 2017

676 views

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1 answer

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Discrete
Find the chromatic number of the graph G below (a) 3 (b) 4 (c) 5 (d) None of the above

mathematics asked in Others Oct 19, 2017

370 views

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1 answer

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Discrete
Consider the graph G given below. The graph G is (a) planar (b) non- planar

mathematics asked in Others Oct 19, 2017

508 views

1 vote

1 answer

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#GroupTheory #TestBook

Rishi yadav asked in Set Theory & Algebra Oct 2, 2017

259 views

1 vote

1 answer

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#GroupTheory #TestBook
Plz explain this question

Rishi yadav asked in Set Theory & Algebra Oct 2, 2017

314 views

1 vote

0 answers

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#Generating_Function
We are interested in generating functions for the number of different ways to com pose a bag of n donuts subject to various restrictions. For each of the restrictions in below, find a closed form for the corresponding generating function. 1.The donuts must be chocolate, ... there must be a multiple of 4 plain. 2. All the donuts are plain and their number is a multiple of 4

Sarvottam Patel asked in Mathematical Logic Aug 31, 2016

by Sarvottam Patel

451 views

2 votes

3 answers

22

Made easy
What is the chromatic number of following graphs? 1) 2)

gaurav9822 asked in Graph Theory Aug 10, 2016

798 views

0 votes

1 answer

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What is the average marks distribution in a mathematics for CSE?
I am from a Mechanical background and I am going to give a GATE2017 in cse. I want to know about the mark distribution among the subjects of Maths(like Probabilty, Set theory , Graphs theory, logic etc). I know there is no official distribution but still in average case how it is distributed?

PieChuckerr asked in GATE Jul 3, 2016

882 views

0 votes

2 answers

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Discrete Mathematics
Determine whether (p &and; ( p → q )) → q is Tautology , Contradiction or Contingency.

LavTheRawkstar asked in Mathematical Logic Jun 26, 2016

by LavTheRawkstar

455 views

1 vote

1 answer

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What is the solution for this ‎Discrete Mathematics puzzle?
Also, explain the question along with your answer. Thank You.

Navneet Srivastava asked in Mathematical Logic Jun 19, 2016

by Navneet Srivastava

1.3k views

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