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Hot questions in Discrete Mathematics

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1 answer

5661

Kenneth Rosen: Counting-Chapter 5
How many license plates consisting of three letters followed by three digits contain no letter or digit twice?

Swati001 asked in Combinatory Aug 20, 2016

2.7k views

0 votes

1 answer

5662

thor asked in Mathematical Logic Dec 28, 2016

by thor

289 views

0 votes

1 answer

5663

proposition Logic
Please explain

pps121 asked in Mathematical Logic Dec 18, 2016

by pps121

395 views

0 votes

0 answers

5664

is there ny 0 equivalence class ?

Wanted asked in Set Theory & Algebra Jan 3, 2017

by Wanted

209 views

0 votes

1 answer

5665

Graph Theory
Which of the following statements is incorrect i) In a graph G with number of vertices n, n ≥ 2, there are two vertices that have exactly the same degree ii) Let G be a K-regular bipartite graph with k ≥ 2. Then G has no cut edge

Anirban Biswas asked in Graph Theory Dec 11, 2016

by Anirban Biswas

465 views

0 votes

1 answer

5666

Anup patel asked in Mathematical Logic Jan 2, 2017

216 views

0 votes

0 answers

5667

How this statement is true
How this is true ? $_{r}^{\frac{n(n-1)}{2}}\textrm{C} = 2^{\frac{n(n-1))}{2}}$

PEKKA asked in Graph Theory Jan 2, 2017

by PEKKA

273 views

3 votes

2 answers

5668

Logic
Everyone has exactly one best friend Are all three below same? Let B(x, y) to be the statement “y is the best friend of x" $ ∀x∃y(B(x, y) ∧ ∀z((z = y)→¬B(x, z))) $ $ ∀x ∃!y (B(x, y) $ $ ∀x ∃y (B(x, y) ∧ ∀z (B(x, z) → (y = z))) $

Shivam Chauhan asked in Mathematical Logic Oct 18, 2016

by Shivam Chauhan

1.0k views

0 votes

1 answer

5669

Combinatorics
(2n!)/(n!*n!*2^(n+1)) Is this an integer or not ?

Mukul Goswami asked in Mathematical Logic Dec 28, 2016

by Mukul Goswami

359 views

0 votes

1 answer

5670

discrete maths
what is equivalence class in discrete maths?

shivamji asked in Mathematical Logic Dec 30, 2016

260 views

0 votes

0 answers

5671

what is condition to know whether a function is differentiable or not ? regarding following.
f(x)=|x|

Wanted asked in Mathematical Logic Jan 3, 2017

by Wanted

236 views

0 votes

1 answer

5672

Hamiltonian cycles
Number of distinct Hamiltonian cycles are there in a unlabeled complete graph K6______ [Note : the path a->b->c is same as b->c->a]

Neal Caffery asked in Graph Theory Dec 11, 2016

by Neal Caffery

385 views

0 votes

0 answers

5673

madeeasy
An entrepreneur needs to assign 5 different tasks to three of his employees. If every employee is assigned at least 1 task, how many ways can the entrepreneur assign those tasks to his employees? Doubt: Can this question reduce to distributing labelled objects ... boxes are empty. My view: The three employees are different from each other and hence should be treated as labelled boxes. closed

Akhilesh Yadav 1 asked in Combinatory Dec 28, 2016

by Akhilesh Yadav 1

249 views

0 votes

1 answer

5674

Recurrence Relation

Samujjal Das asked in Combinatory Dec 17, 2016

by Samujjal Das

469 views

0 votes

0 answers

5675

ambigous matching:
what is difference between maximum matching maximal matching perfect matching.

Wanted asked in Mathematical Logic Jan 5, 2017

by Wanted

157 views

0 votes

0 answers

5676

combinations
An Entreprenuer needs to assign 5 different tasks to 3 of his employees . If every employees is assigned atleat 1 task, how many ways can the entrepreneur assign those tasks to his employee? closed

Anup patel asked in Mathematical Logic Jan 2, 2017

238 views

0 votes

1 answer

5677

thor asked in Mathematical Logic Jan 1, 2017

by thor

234 views

4 votes

1 answer

5678

Kenneth Rosen Edition 6th Exercise 1.1 Question 11 (Page No. 17)
Let p, q, and r be the propositions p : Grizzly bears have been seen in the area. q : Hiking is safe on the trail. r : Berries are ripe along the trail. Write these propositions using p, q, and r and logical ... . Hiking is not safe on the trail whenever grizzly bears have been seen in the area and berries are ripe along the trail.

go_editor asked in Mathematical Logic Apr 14, 2016

11.8k views

1 vote

1 answer

5679

Expected valu
I always do expected value questions wrong. Please suggest a detailed way to solve these questions. Suppose a coin is tossed 9 times, with the result $HHHT T T T HT$ The first set of three heads is called a run.There are three more runs in this ... the same value as the first two. Now suppose an experiment consists of tossing a fair coin three times. Find the expected number of runs

thor asked in Combinatory Nov 26, 2016

by thor

679 views

5 votes

1 answer

5680

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

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