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Hot questions in Discrete Mathematics

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1 answer

5101

Rosen Exercise
Let S(x) be the predicate “x is a student,” F(x) the predicate “x is a faculty member,” and A(x, y) the predicate “x has asked y a question,” where the domain consists of all people associated with your school. Express the following sentence using quantifiers: Some student has asked every faculty member a question.

parulk asked in Mathematical Logic May 22, 2017

by parulk

408 views

6 votes

2 answers

5102

UGC NET CSE | December 2015 | Part 2 | Question: 48
How many solutions are there for the equation $x+y+z+u=29$ subject to the constraints that $x \geq 1, \: \: y \geq 2 \: \: z \geq 3 \: \: and \: \: u \geq 0$? 4960 2600 23751 8855

go_editor asked in Discrete Mathematics Aug 8, 2016

3.5k views

0 votes

0 answers

5103

#First order logic
Hi, I wanted to know the best way to convert a given statement to a first order logic,I was trying to solve the questions related to them but never getting them correct. Could anyone help me in this. I Even had a look in to the videos from GateBook it was like I understood the topics But i could not solve ( convert a given statement to a first order logic) Thanks in advance

Sai Bhargav asked in Mathematical Logic Jun 3, 2017

265 views

3 votes

1 answer

5104

MATRIX
Let A be a $3 \times 3$ matrix with integer entries such that $|A| =1$. What is the maximum possible number of entries of A that are even?

Supremo asked in Set Theory & Algebra Jan 19, 2017

786 views

0 votes

0 answers

5105

GATE Graph Theory
Let G = (V, E) be a directed graph where V is the set of vertices and E the set of edges. Then which one of the following graphs has the same strongly connected components as G? ( A ) G1 = (V, E1) where E1 = {(u, v) | (u, v) ∉ E} ( B ) G2 ... D ) G4 = (V4, E) where V4 is the set of vertices in G which are not isolated Can anyone give a detailed answer to this question, please? :) closed

Bongbirdie asked in Graph Theory May 12, 2017

568 views

5 votes

3 answers

5106

What are the complement pairs for the following lattice?
What are the complement pairs for the following lattice?

Nilam asked in Set Theory & Algebra Oct 21, 2015

by Nilam

3.9k views

8 votes

1 answer

5107

ISRO2008-78
Consider the graph shown in the figure below: Which of the following is a valid strong component? $a, c, d$ $a, b, d$ $b, c, d$ $a, b, c$

go_editor asked in Graph Theory Jun 13, 2016

4.0k views

4 votes

1 answer

5108

UGC NET CSE | December 2015 | Part 2 | Question: 1
How many committees of five people can be chosen from 20 men and 12 women such that each committee contains at least three women 75240 52492 41800 9900

Sankaranarayanan P.N asked in Combinatory Aug 2, 2016

by Sankaranarayanan P.N

3.8k views

0 votes

1 answer

5109

GATE_2015_ECE Matrices
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sh!va asked in Mathematical Logic Feb 14, 2017

by sh!va

367 views

1 vote

1 answer

5110

Test by Bikram | Mathematics | Test 2 | Question: 13
With reference to the above diagram: $f$ is onto, $g$ is onto $\implies \: g.f$ is onto. if $g.f$ is one-to-one $\implies \: g$ and $f$ both need to be one-to-one. if $g.f$ is onto $\implies \: g$ has to be ... is bijective Which of the following statements is TRUE? I,II are correct. I,II,III are correct. I,III,IV are correct. I,IV are correct.

Bikram asked in Mathematical Logic May 24, 2017

by Bikram

317 views

1 vote

1 answer

5111

Liar paradox
Which of the following statements is true? There are no true statements. There is only 1 false statement. There are only 2 false statements . There are only 3 false statements . There are only 4 false statements. The question seems complete as it is an ... I expect some option to be correct or else how are they gonna grade the people attempting it? Any explainations would be welcome.

Krunal2016 asked in Mathematical Logic Apr 30, 2017

576 views

1 vote

1 answer

5112

Kenneth Rosen Ch 6 Counting
#discrete 6 runners are in a 100 yard dash. Find the ways possible for 3 medals to be awarded if ties are possible.

nick17india asked in Mathematical Logic May 5, 2017

560 views

3 votes

4 answers

5113

subgraphs
number of subgraph for K3 is

Pooja Palod asked in Graph Theory Jan 24, 2016

1.4k views

0 votes

1 answer

5114

find complexity?
What is cyclomatic complexity of below program below: i=0; n=4; while(i<n-1) {j=i+1; while(j<n) {if(A[i]< A[j]) swap (A[i],A[j]);} i=i+1; } A)3 B)4 C)5 D)6

neha singh asked in Graph Theory May 13, 2017

491 views

1 vote

1 answer

5115

Test by Bikram | Mathematics | Test 2 | Question: 17
$\forall \: x \: \exists \: y \: [ x + y = 2 \wedge 2x - y = 1 ]$. Truth value of this statement is : T F Both T and F Neither T nor F

Bikram asked in Mathematical Logic May 24, 2017

by Bikram

238 views

0 votes

0 answers

5116

Gate 2015
Out of the following high of the battery achieved highest growth

Maharshi 121 asked in Mathematical Logic May 21, 2017

by Maharshi 121

291 views

1 vote

1 answer

5117

PGEE 2017
Consider a graph where vertex having number 2 to 12 (including 2 and 12), there is an edge between two vertex x and y iff x divides y Which vertex will have highest in degree ?

Tesla! asked in Graph Theory Apr 30, 2017

by Tesla!

546 views

1 vote

1 answer

5118

Test by Bikram | Mathematics | Test 2 | Question: 7
A student writes $40$ chemistry True/False questions in an exam. Among these questions, $17$ are true. If the questions can be positioned in any order, then how many different answer keys are possible? $40! ^* (23!^* 17! )$ $40^* (23!^*17!)$ $40!/(23!^*17!)$ $40!^* C(40,17)$

Bikram asked in Mathematical Logic May 24, 2017

by Bikram

322 views

1 vote

3 answers

5119

Gate math book
Find the sum of n terms of the series $log a+ log \frac{a^{2}}{b} + log \frac{a^{3}}{b^{2}}+ ...$ to n terms

Tesla! asked in Mathematical Logic Apr 5, 2017

by Tesla!

741 views

0 votes

1 answer

5120

ME Gate, 2014
https://www.facebook.com/photo.php?fbid=125621908008187&set=gm.635960336609180&type=3&theater plz solve this

too_simple asked in Mathematical Logic May 21, 2017

235 views

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