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Recent questions in Discrete Mathematics

2 votes

1 answer

4941

Planar graph || Kenneth
A planar graph has, $\large\color{maroon}{\text{k}}$ connected components $\large\color{maroon}{\text{v}}$ vertices $\large\color{maroon}{\text{e}}$ edges If the plane is divided into $\large\color{maroon}{\text{r}}$ ... $\large\color{maroon}{\text{v}}$ , $\large\color{maroon}{\text{e}}$ and $\large\color{maroon}{\text{r}}$ ?

dd asked in Graph Theory Dec 19, 2016

by dd

759 views

1 vote

1 answer

4942

Meenakshi Sharma asked in Mathematical Logic Dec 19, 2016

by Meenakshi Sharma

250 views

2 votes

1 answer

4943

Kenneth Rosen Edition 6th Exercise 5.1 Question 5 (Page No. 344)
Question: Six different airlines fly from New York to Denver and seven fly from Denver to San Francisco. How many different pairs of airlines can you choose on which to book a trip from New York to San Francisco via ... an airline for the continuation flight to San Francisco ? How many of these pairs involve more than one airline ?

Rounak Agarwal asked in Combinatory Dec 19, 2016

by Rounak Agarwal

2.5k views

4 votes

3 answers

4944

Number of solutions
Number of non negative integer solutions to the equation X1 + X2 + X3 + X4 = 15, where $1 \leqslant X1,X2,X3,X4 \leqslant6$ is ________

Samujjal Das asked in Combinatory Dec 19, 2016

by Samujjal Das

5.2k views

14 votes

2 answers

4945

GATE CSE 1988 | Question: 2xviii
Show that if $G$ is a group such that $(a. b)^2 = a^2.b^2$ for all $a, b$ belonging to $G$, then $G$ is an abelian.

go_editor asked in Set Theory & Algebra Dec 19, 2016

1.7k views

15 votes

4 answers

4946

GATE CSE 1988 | Question: 2xvi
Write the adjacency matrix representation of the graph given in below figure.

go_editor asked in Graph Theory Dec 19, 2016

3.9k views

0 votes

1 answer

4947

proposition Logic
Please explain

pps121 asked in Mathematical Logic Dec 18, 2016

by pps121

395 views

13 votes

3 answers

4948

GATE CSE 1988 | Question: 2vii
Define the validity of a well-formed formula(wff)?

go_editor asked in Mathematical Logic Dec 18, 2016

1.8k views

0 votes

1 answer

4949

focus _GATE asked in Combinatory Dec 17, 2016

315 views

0 votes

1 answer

4950

Recurrence Relation

Samujjal Das asked in Combinatory Dec 17, 2016

by Samujjal Das

472 views

1 vote

1 answer

4951

Probability (Expectation)
Suppose that the expectation of a random variable X is 5. Which of the following statements is true? (A) - There is a sample point at which the X has the value 5. (B) - There is a sample point at which the X has the value greater than 5. (C) - There is a sample point at which the X has the value greater than or equal to 5. (D) - None. Explain.

Hardik Vagadia asked in Mathematical Logic Dec 17, 2016

by Hardik Vagadia

914 views

1 vote

1 answer

4952

partion of vertex

iita asked in Graph Theory Dec 16, 2016

by iita

250 views

0 votes

0 answers

4953

vaishali jhalani asked in Mathematical Logic Dec 16, 2016

by vaishali jhalani

671 views

1 vote

1 answer

4954

Ace Test Series: Set Theory & Algebra - Relations

vaishali jhalani asked in Set Theory & Algebra Dec 16, 2016

by vaishali jhalani

741 views

0 votes

3 answers

4955

priyanka gautam-piya asked in Mathematical Logic Dec 15, 2016

by priyanka gautam-piya

636 views

29 votes

4 answers

4956

GATE CSE 1989 | Question: 14a
Symbolize the expression "Every mother loves her children" in predicate logic.

makhdoom ghaya asked in Mathematical Logic Dec 15, 2016

by makhdoom ghaya

5.8k views

25 votes

4 answers

4957

GATE CSE 1989 | Question: 13c
Find the number of single valued functions from set $A$ to another set $B,$ given that the cardinalities of the sets $A$ and $B$ are $m$ and $n$ respectively.

makhdoom ghaya asked in Set Theory & Algebra Dec 15, 2016

by makhdoom ghaya

2.8k views

0 votes

1 answer

4958

MadeEasy Test Series: Mathematical Logic - First Order Logic

KISHALAY DAS asked in Mathematical Logic Dec 15, 2016

by KISHALAY DAS

1.8k views

1 vote

0 answers

4959

First Order Logic

Samujjal Das asked in Mathematical Logic Dec 15, 2016

by Samujjal Das

1.0k views

0 votes

1 answer

4960

MadeEasy Test Series: Set Theory & Algebra - Groups
Which of the following is true? Every lower triangular matrix is group under multiplication operation where all elements of diagonal are non zero numbers. Every diagonal matrix is group under multiplication operation, where all elements of ... under addition operation where all elements are real numbers. Both (a) and b) Why is C incorrect?

Kai asked in Set Theory & Algebra Dec 15, 2016

by Kai

842 views

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