Q. A directed graph or digraph can have directed cycle in which ______

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Q. Let, D = <A, R> be a directed graph or digraph,then D’ = <A’, R’> is a subgraph if ___________

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Q. The graph representing universal relation is called _______

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Q. What is a complete digraph?

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Q. Disconnected components can be created in case of ___________

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Q. A simple graph can have _______

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Q. Degree of a graph with 12 vertices is _______

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Q. In a finite graph the number of vertices of odd degree is always ______

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Q. An undirected graph has 8 vertices labelled 1, 2, …,8 and 31 edges. Vertices 1, 3, 5, 7 have degree 8 and vertices 2, 4, 6, 8 have degree 7. What is the degree of vertex 8?

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Q. G is an undirected graph with n vertices and 26 edges such that each vertex of G has a degree at least 4. Then the maximum possible value of n is ___________

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Q. Hasse diagrams are first made by ______

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Q. If a partial order is drawn as a Hasse diagram in which no two edges cross, its covering graph is called ______

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Q. If the partial order of a set has at most one minimal element, then to test whether it has a non-crossing Hasse diagram its time complexity __________

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Q. Which of the following relation is a partial order as well as an equivalence relation?

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Q. The relation ≤ is a partial order if it is ___________

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Q. In which of the following relations every pair of elements is comparable?

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Q. In a poset (S, ⪯), if there is no element n∈S with m<n, then which of the following is true?

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Q. In a poset P({v, x, y, z}, ⊆) which of the following is the greatest element?

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Q. Suppose P₁ is a partially ordered class and a cut of P₁ is pair (D, T) of nonempty subclasses of P₁ satisfies which of the following properties?

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Q. Let G be the graph defined as the Hasse diagram for the ⊆ relation on the set S{1, 2,…, 18}. How many edges are there in G?

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