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Question

A vertex cover of an undirected graph G(V, E) is a subset V1 ⊆ V vertices such that

a.

Each pair of vertices in V1 is connected by an edge

b.

If (u, v) ∈ E then u ∈ V1 and v ∈ V1

c.

If (u, v) ∈ E then u ∈ V1 or v ∈ V1

d.

All pairs of vertices in V1 are not connected by an edge

Answer: (c).If (u, v) ∈ E then u ∈ V1 or v ∈ V1

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Q. A vertex cover of an undirected graph G(V, E) is a subset V1 ⊆ V vertices such that

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