# Discrete Mathematics Questions and Answers updated daily – Computer Knowledge

Discrete Mathematics Questions: Solved 34 Discrete Mathematics Questions and answers section with explanation for various online exam preparation, various interviews, Computer Knowledge Category online test. Category Questions section with detailed description, explanation will help you to master the topic.

## Discrete Mathematics Questions

1. A function is said to be ______________, if and only if f(a) = f(b) implies that a = b for all a and b in the domain of f.

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Correct Ans:One-to-one

Explanation:

A function is one-to-one if and only if f(a)?f(b) whenever a?b.

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2. For every relation R on some set, if (t,t) is not in, then R cannot be

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Correct Ans:Transitive

Explanation:

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3. Which of the following is not a type of graph ?

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Correct Ans:Path

Explanation:

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4. A continuous non - intersecting curve in the plane whose origin and terminus coincide ?

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Correct Ans:Jordan

Explanation:

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5. For a given set, relation is defined as (a,b) in R then (b,a) is also in R, then R should be ?

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Correct Ans:Symmetric

Explanation:

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6. Two sets have the same size if and only if there is a one - to - one function from one set onto other. This principle is called ?

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Correct Ans:autonomous principle

Explanation:

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7. Product of first n natural numbers

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Correct Ans:factorial

Explanation:

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8. Interchange of rows and columns in matrix

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Correct Ans:Transpose

Explanation:

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9. Simplify : (p v q) ^ (q v 0)

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Correct Ans:q

Explanation:

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10. Simplify : (p v q) ^q

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Correct Ans:q

Explanation:

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11. For every relation R on some set, if (t,t) is in R, then R is

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Correct Ans:Reflexive

Explanation:

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12. An integer will be in the form of n = 2k +1, where k is any natural number

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Correct Ans:n will be an odd number

Explanation:

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13. If T is a full binary tree and has 5 internal vertices then the total vertices of T are

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Correct Ans:11

Explanation:

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14. How many functions are there from a set with three elements to a set with two element ?

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Correct Ans:8

Explanation:

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15. If p = It is raining, and q = She will go to college. How will the statement "It is raining and she will not go to college" be denoted ?

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Correct Ans:p ^ ~q

Explanation:

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16. Suppose v is an isolated vertex in a graph, then the degree of v is

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Correct Ans:0

Explanation:

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17. Length of the walk of a graph is

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Correct Ans:The number of edges in walk W

Explanation:

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18. What is the Cartesian product of A = {1, 2} and B = {a, b}?

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Correct Ans:{(1, a), (2, a), (1, b), (2, b)}

Explanation:

A subset R of the Cartesian product A x B is a relation from the set A to the set B.

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19. A partial ordered relation is transitive, reflexive and

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Correct Ans:Antisymmetric

Explanation:

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20. The number of leaf nodes in a complete binary tree of depth d is

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Correct Ans:2d

Explanation:

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