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Hot questions in Discrete Mathematics

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5781

GATE practice booklet - ACE engineering publication, chatper 3 q.7
how many simple non isomorphic graphs are possible with 9 vertices, 9 edges and degree of each vertex is 2? closed

Devasish Ghosh asked in Graph Theory Nov 12, 2016

by Devasish Ghosh

277 views

1 vote

1 answer

5782

ME-Practice Book Discrete Math Q#72

KISHALAY DAS asked in Set Theory & Algebra Nov 5, 2016

by KISHALAY DAS

372 views

2 votes

1 answer

5783

Kenneth Rosen Edition 6th Exercise 6.6 Question 3 (Page No. 456)
How many solution does the equation x1+x2+x3=13 have where x1 x2 and x3 are non negative less than 6 ?

Dexter asked in Combinatory Oct 21, 2016

by Dexter

600 views

2 votes

0 answers

5784

Graph theory
Decomposition of complete graph into cycles through all vertices. Continuing explanation [here][1], Next explanation is given as for $n=5$ , $n=7$ ... me out!! [1]: http://math.stackexchange.com/questions/1985647/decomposition-of-complete-graph-into-cycles-through-all-vertices/1985652#1985652

Anand. asked in Graph Theory Oct 26, 2016

by Anand.

416 views

1 vote

2 answers

5785

Different color combination of identical balls
There are three identical red balls and four identical blue balls in bag.Three balls are drawn.what is the number of different color combinations ?

vivekpinto07 asked in Combinatory May 8, 2016

by vivekpinto07

2.7k views

0 votes

0 answers

5786

Doubt: Graph Theory
What is the maximum number of verices possible in a graph with chromatic index k?

Manu Madhavan asked in Graph Theory Nov 15, 2016

by Manu Madhavan

270 views

2 votes

1 answer

5787

dileswar sahu asked in Set Theory & Algebra Oct 22, 2016

by dileswar sahu

467 views

1 vote

1 answer

5788

In how many ways can 5 chocolates be chosen from an unlimited number of Cadbury,Five-star, and Perk chocolates?

radha gogia asked in Combinatory Feb 25, 2016

4.5k views

2 votes

2 answers

5789

Doubt
A $\phi$ (empty) relation on any set $A$ is not reflexive because for every $ a \in A$, $(a, a) \notin \phi$, but $\phi$ is a symmetric as well as transitive relation on $A$, how is that possible $?$

vivek9837 asked in Set Theory & Algebra Oct 17, 2016

560 views

1 vote

2 answers

5790

Propositional Logic | Self doubt
Please give one example of each following logic in english sentence - 1. ($\forall$xP(x) -> $\exists$xQ(x)) == $\exists$x(P(x) -> Q(x)) 2. ($\exists$xP(x) -> $\forall$xQ(x)) -> $\forall$x(P(x) -> Q(x)) 3. $\forall$x(P(x) -> R) -> ($\exists$xP(x) -> R)

vijaycs asked in Mathematical Logic Aug 19, 2016

1.4k views

2 votes

2 answers

5791

Graph
consider G is an undirected simple graph in which

Hira Thakur asked in Graph Theory Aug 14, 2016

434 views

3 votes

2 answers

5792

GATE Overflow | Mathematics | Test 1 | Question: 22
Total number of Equivalent Relations that can be defined on set $\{1,2,3\}$ ? 8 64 5 3

Bikram asked in Set Theory & Algebra Aug 8, 2016

by Bikram

607 views

3 votes

2 answers

5793

if R1 is irreflexive and R2 is irreflexive then can R1 union R2 be reflexive ? true or false
if R1 is irreflexive and R2 is irreflexive then can R1$\cup$ R2 be reflexive ? true or false

saket nandan asked in Set Theory & Algebra Mar 22, 2016

by saket nandan

3.0k views

1 vote

1 answer

5794

KISHALAY DAS asked in Combinatory Oct 28, 2016

by KISHALAY DAS

512 views

2 votes

1 answer

5795

dileswar sahu asked in Set Theory & Algebra Oct 22, 2016

by dileswar sahu

461 views

0 votes

1 answer

5796

NPTEL Discrete Mathematics Video Lecture
From the GATE CSE site I got the list of recommended Video lectures to watch. In case of Discrete Mathematics, I have downloaded the following NPTEL video playlist: https://www.youtube.com/playlist?list=PLbMVogVj5nJQ-tIzyygzzLLxomzlbIiE4 I would like to ... them and I will go through all the videos once I complete the first one. Thank you for your time.

RahulVerma asked in Mathematical Logic Apr 28, 2016

2.9k views

0 votes

0 answers

5797

Engineering mathematics - Calculus
How can we find the natural logarithm of a vector?

nandhugnair asked in Mathematical Logic Oct 26, 2016

381 views

1 vote

1 answer

5798

Discrete maths
https://gateoverflow.in/?qa=blob&qa_blobid=15165260876214054240

Ravi_1511 asked in Graph Theory Nov 2, 2016

267 views

4 votes

1 answer

5799

ISRO-2013-76
The number of edges in a 'n' vertex complete graph is? $n ^{*} (n - 1) / 2$ $n^{2}$ $n ^{*} (n + 1) / 2$ $n ^{*} (n + 1)$

makhdoom ghaya asked in Graph Theory May 13, 2016

by makhdoom ghaya

2.1k views

0 votes

0 answers

5800

KISHALAY DAS asked in Mathematical Logic Nov 13, 2016

by KISHALAY DAS

214 views

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