GATE CSE 2016 Set 2 | Graph Theory Question 15 | Discrete Mathematics

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GATE CSE 2016 Set 2

Numerical

-0

The minimum number of colours that is sufficient to vertex-colour any planar graph is _____________ .

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GATE CSE 2014 Set 1

MCQ (Single Correct Answer)

-0.3

Let $$G = \left( {V,E} \right)$$ 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 $$G$$?

$${G_1} = \left( {V,\,\,{E_1}} \right)\,\,\,$$where $$\,\,{E_1} = \left\{ {\left( {u,v} \right) \notin E} \right\}$$

$${G_2} = \left( {V,\,\,{E_2}} \right)\,\,\,$$ where $$\,\,\,{E_2} = \left\{ {\left( {u,v} \right) \in E} \right\}$$

$${G_3} = \left( {V,\,\,{E_3}} \right)\,\,\,$$ where $$\,\,{E_3} = $$ {$${\left( {u,v} \right)\left| \, \right.}$$ there isa path of length $$ \le 2$$ from $$u$$ to $$v$$ in $$E$$}

$${G_4} = \left( {{V_4},\,\,{E_{}}} \right)\,\,\,$$ where $${{V_4}}$$ is the set of vertices in $$G$$ which are not isolated.

GATE CSE 2014 Set 1

Numerical

-0

The maximum number of edges in a bipartite graph on $$12$$ vertices is _________.

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GATE CSE 2014 Set 3

Numerical

-0

let $$G$$ be a group with $$15$$ elements. Let $$L$$ be a subgroup of $$G$$. It is known that $$L \ne G$$ and that the size of $$L$$ is at least $$4$$. The size of $$L$$ is ______.

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