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Recent questions in Discrete Mathematics

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5161

Kenneth Rosen Edition 6th Exercise 5.5 Question 44 b (Page No. 381)
. In how many ways can a dozen books be placed on four distinguishable shelves if no two books are the same, and the positions of the books on the shelves matter?

Dexter asked in Combinatory Oct 16, 2016

by Dexter

712 views

2 votes

2 answers

5162

testbook
Which of the above lattice is distributve? a) both iii and iv) b) only iv)

GATE2017TP asked in Set Theory & Algebra Oct 16, 2016

392 views

2 votes

2 answers

5163

MADE EASY TEST SERIES
If 2, – 4 are the eigen values of a nonsingular matrix A and |A| = 8, then the eigen values of Adj A are x and –y then the value of x + y is _________. My doubt is x+y = 6 is possible or not ? ans is -6 given by ME.

Tariq Husain Khan asked in Mathematical Logic Oct 15, 2016

by Tariq Husain Khan

313 views

–1 vote

2 answers

5164

Made easy test maths
If 2, – 4 are the eigen values of a nonsingular matrix A and |A| = 8, then the eigen values of Adj A are x and –y then the value of x + y is _________. My doubt is value of x+y = 6 is possible or not bcoz ans is -6 given by ME.

Tariq Husain Khan asked in Mathematical Logic Oct 15, 2016

by Tariq Husain Khan

342 views

4 votes

1 answer

5165

Find chromatic number and matching number of a graph

Rohan Mundhey asked in Graph Theory Oct 14, 2016

by Rohan Mundhey

2.7k views

2 votes

2 answers

5166

Find the number of into functions

Rohan Mundhey asked in Set Theory & Algebra Oct 14, 2016

by Rohan Mundhey

10.3k views

2 votes

1 answer

5167

Rohan Mundhey asked in Mathematical Logic Oct 14, 2016

by Rohan Mundhey

281 views

0 votes

0 answers

5168

Kenneth Rosen Edition 6th Exercise 5.2 Example 4 (Page No. 348)
show that for evry n there is a multiple of n such that its decimal expansion has only 0's and 1's.

Aayushi Aggarwal asked in Combinatory Oct 14, 2016

by Aayushi Aggarwal

350 views

1 vote

1 answer

5169

dileswar sahu asked in Mathematical Logic Oct 13, 2016

by dileswar sahu

432 views

0 votes

1 answer

5170

Random selection
6 numbers are randomly selected between 1 and 100. What is the probability that all are distinct

vivek9837 asked in Mathematical Logic Oct 13, 2016

350 views

0 votes

0 answers

5171

..
What are Binary Relations ? How many of them possible on a set of N elements ?

Rohan Mundhey asked in Set Theory & Algebra Oct 12, 2016

by Rohan Mundhey

457 views

0 votes

1 answer

5172

What is largest no of maximal independent set of complete bipartite graph K(4,2)?
What is largest number of maximal independent set of complete bipartite graph K(4,2)? a)2 b)3 c)4 d)6

neha singh asked in Graph Theory Oct 11, 2016

3.2k views

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1 answer

5173

General Topic Doubt Set Theory & Algebra: Groups
In the above question my doubt is instead of under multiplication if we change under ADDITION then what is its value?plz someone explain details.

dileswar sahu asked in Set Theory & Algebra Oct 11, 2016

by dileswar sahu

322 views

2 votes

0 answers

5174

Permutation groups

Rahul Jain25 asked in Set Theory & Algebra Oct 11, 2016

by Rahul Jain25

857 views

8 votes

1 answer

5175

Groups theory
Let $G:$ be a group. $a^5=e,\quad aba^{-1}=b^2,\quad a,b,\in G$ Then which of the following is an order of $b$? $31$ $32$ $30$ $2$

Rahul Jain25 asked in Set Theory & Algebra Oct 11, 2016

by Rahul Jain25

908 views

5 votes

1 answer

5176

Combinatorics
A proffesor writes 40 discrete mathematics true/false question . of the statements in these question 17 are true . if the question can be positioned in any order . then how many diff key are possible ?

Dexter asked in Combinatory Oct 11, 2016

by Dexter

1.1k views

2 votes

2 answers

5177

Rahul Jain25 asked in Mathematical Logic Oct 10, 2016

by Rahul Jain25

1.8k views

7 votes

2 answers

5178

Graph connectivity
Consider the following statements $S1:2,3,3,3,3,3,4$ is a graphic sequence $S2:$ A connected graph with $10$ vertices and $16$ edges without having a cycle of length $3$, is a planar graph. Both $S1$ and $S2$ are true $S1$ is false but $S2$ is true $S2$ is false but $S1$ is true Both $S1$ and $S2$ are false

Rahul Jain25 asked in Graph Theory Oct 10, 2016

by Rahul Jain25

1.0k views

1 vote

1 answer

5179

Rahul Jain25 asked in Graph Theory Oct 10, 2016

by Rahul Jain25

368 views

0 votes

0 answers

5180

How to find LUB, GLB ?
I am confused. I can't figured out how to find GLB, LUB. In what cases and How they don't exists. Please tell me how to do it. Thanks !

Sei Karma asked in Set Theory & Algebra Oct 9, 2016

1.7k views

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