Discrete Mathematics


Q81.

Consider the directed graph given below. Which one of the following is TRUE?
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Q82.

Suppose depth first search is executed on the graph below starting at some unknown vertex. Assume that a recursive call to visit a vertex is made only after first checking that the vertex has not been visited earlier. Then the maximum possible recursion depth (including the initial call) is _________.
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Q83.

The conic section that is obtained when a right circular cone is cut through a plane that is parallel to the side of the cone is called _____
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Q84.

How many diagonals can be drawn by joining the angular points of an octagon?
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Q85.

An ordered n-tuple (d_{1}, d_{2} ,... , d_{n}) with d_{1}\geq d_{2} \geq ... \geq d_{n} is called graphic if there exists a simple undirected graph with n vertices having degrees d_{1}, d_{2} ,... , d_{n} respectively. Which of the following 6-tuples is NOT graphic?
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Q86.

The number of edges in a 'n' vertex complete graph is?
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Q87.

What is the cyclomatic complexity of a module which has seventeen edges and thirteen nodes?
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Q88.

Which of the following statements is/are TRUE for undirected graphs? P: Number of odd degree vertices is even. Q: Sum of degrees of all vertices is even.
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Q89.

Consider an undirected random graph of eight vertices. The probability that there is an edge between a pair of vertices is 1/2. What is the expected number of unordered cycles of length three?
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Q90.

Let G be a group of order 6, and H be a subgroup of G such that 1 < |H| < 6. Which one of the following options is correct?
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