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UNIT -04

Graph Theory

UNIT -04/ LECTURE- 01

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 348-356}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Define What is Graph?

June 2006

2

 

Q 2

Define the following

(i) Multi Graph  (ii) Pendant vertex  (iii)Isomorphic graphs

 

June 2013

7

Q. 3

Define the following

(i) Regular Graph  (ii) Homeomorphic graph

Dec 2011

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUBGRAPHS, WALKS, PATHS, CIRCUITS AND CYCLES

UNIT- 04/ LECTURE-02

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 357-359}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Define walk path and circuit in a directed graph?

June 2007

10

 

Q 2

Prove that the maximum number of edges in a simple graph with n vertices is n(n-1)/2

 

Dec 2008, June 2011, Dec 2013

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DIFFERENT TYPES OF GRAPHS, SHORTEST PATH IN WEIGHTED GRAPHS

UNIT- 04/ LECTURE- 03

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 364-366}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Prove that a simple graph with n vertices and k components can have at most (n-k)(n-k+1)/2 edges

June 2010,June 2012

7

 

Q 2

Define weighted graph

 

June 2013

2

Q. 3

Define Bipartite graph

Dec  2003

2

 

Write an algorithm for shortest path in weighted graph and use it to find shortest path from a to z in the graph

b                       2

        22                                                          e

                                                  4                                 4

a            16      c                                            10                         z

                                                                       7

8                                                3                                                9

 

                         d                                                       f

6

 

June 2004

7

Q.4

Write an algorithm to find the shortest path in a weighted graph

June 2014

7

 

 

 

 

 

 

 

 

 

 

 

 

 

PROBLEMS ON SHORTEST PATH IN WEIGHTED GRAPHS

UNIT- 04/ LECTURE -04

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 365-370}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Find shortest path in weighted graph and use it to find shortest path from a to z in graph

                   b        7      d

                                                        3

1

                   2                5          3

a                                                                         z

                                                          6

4

                   c                1        e

 

 

Dec 2012

7

 

Q 2

Use Dijkstra algorithm to find the shortest path between a to z in this graph

                   b                 3              e

2                 2                                          1

                                     5

                            c                                              z

a                2                  7                         3

4

                   d                    4            f

 

 

June 2010

7

 

 

 

 

 

 

 

 

 

 

 

EULERIAN PATH, CIRCUITS AND GRAPHS, HAMILTONIAN PATHS

UNIT -04/ LECTURE -05

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 371-373}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Determine shortest path between a and z

 

                    b                2         e

22                 4                     2

                     20                                                  4

a               c                                    10                  z

16                           7

         10      3                          9

8

                d                    6          f

June 2011

10

 

Q 2

Define Eulerian path

 

June 2006,

Dec 2013

2

Q. 3

Define Euler graph

Dec 2013, June 2014

2

Q. 4

Define Hamiltonian path and circuits

June 2013

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATIONS ON GRAPH, DIRECTED GRAPH

UNIT-04/ LECTURE -06

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 374-378}

MATRIX REPRESENTATION OF GRAPHS

UNIT- 04/ LECTURE -07

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 382-386}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Write the adjacency matrix of the graph

                   V5

                                                       V4

 


v6                          v3

 


                      v1                             v2

Dec 2012

7

 

Q 2

Find the adjacency matrix of digraph

                              e1

a                                                 b

                                                   e4

e3                         e2                          e9           e

 

                                                               e8

d                e6          c

e7

 

Dec 2010

7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PLANAR GRAPH

UNIT- 04/ LECTURE-08

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 389-392}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Write down the adjacency and incidence matrix of the graph

                   V1                   e7             v3

               e1                                                      e8      

e2                      e6

                                    V5

V2e3          e5

                                                                e9

                   V4

Dec 2011

7

Q 2

Define Planar graph

 

Dec 2002,2003,2004

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EULER’s FORMULA, GRAPH COLORING AND CHROMATIC NUMBER

UNIT- 04/ LECTURE- 09

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 394-399}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Explain Graph coloring and chromatic numbers

June 2013

4

 

Q.2

Show that every tree with two or more vertices is 2-chromaic

June 2014

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNIT- 04/ LECTURE- 10

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REFERENCES {DISCRETE STRUCTURES BY D.C. AGARWAL, 394-399}

S.NO

RGPV QUESTIONS

Year

Marks

Q.1

Prove that in a graph G with n- vertices always has a Hamiltonian path if the sum of degrees of every pairs of vertices vi, vj in G satisfies the condition d(vi) + d(vj) >= n-1

June 2013

4

 

 

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