Discrete Mathematics Equivalence Classes Partitions Online Exam Quiz

Discrete Mathematics Equivalence Classes Partitions GK Quiz. Question and Answers related to Discrete Mathematics Equivalence Classes Partitions. MCQ (Multiple Choice Questions with answers about Discrete Mathematics Equivalence Classes Partitions

Which of the following is an equivalence relation on R, for a, b ? Z?

Options

A : (a-b) ? Z

B : (a2+c) ? Z

C : (ab+cd)/2 ? Z

D : (2c3)/3 ? Z

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Which of the following relations is the reflexive relation over the set {1, 2, 3, 4}?

Options

A : {(0,0), (1,1), (2,2), (2,3)}

B : {(1,1), (1,2), (2,2), (3,3), (4,3), (4,4)}

C : {,(1,1), (1,2), (2,1), (2,3), (3,4)}

D : {(0,1), (1,1), (2,3), (2,2), (3,4), (3,1)

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For a, b ? R de?ne a = b to mean that |x| = |y|. If [x] is an equivalence relation in R. Find the equivalence relation for [17].

Options

A : {,…,-11, -7, 0, 7, 11,…}

B : {2, 4, 9, 11, 15,…}

C : {-17, 17}

D : {5, 25, 125,…}

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Consider the congruence 45?3(mod 7). Find the set of equivalence class representatives.

Options

A : {…, 0, 7, 14, 28, …}

B : {…, -3, 0, 6, 21, …}

C : {…, 0, 4, 8, 16, …}

D : {…, 3, 8, 15, 21, …}

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Determine the set of all integers a such that a ? 3 (mod 7) such that ?21 ? x ? 21.

Options

A : {?21, ?18, ?11, ?4, 3, 10, 16}

B : {?21, ?18, ?11, ?4, 3, 10, 17, 24}

C : {?24, -19, -15, 5, 0, 6, 10}

D : {?23, ?17, ?11, 0, 2, 8, 16}

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Determine the partitions of the set {3, 4, 5, 6, 7} from the following subsets.

Options

A : {3,5}, {3,6,7}, {4,5,6}

B : {3}, {4,6}, {5}, {7}

C : {3,4,6}, {7}

D : {5,6}, {5,7}

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Determine the number of equivalence classes that can be described by the set {2, 4, 5}.

Options

A : 125

B : 5

C : 16

D : 72

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Determine the number of possible relations in an antisymmetric set with 19 elements.

Options

A : 23585

B : 2.02 * 1087

C : 9.34 * 791

D : 35893

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Suppose a relation R = {(3, 3), (5, 5), (5, 3), (5, 5), (6, 6)} on S = {3, 5, 6}. Here R is known as _________

Options

A : equivalence relation

B : reflexive relation

C : symmetric relation

D : transitive relation

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For a, b ? Z de?ne a | b to mean that a divides b is a relation which does not satisfy ___________

Options

A : irreflexive and symmetric relation

B : reflexive relation and symmetric relation

C : transitive relation

D : symmetric relation

View Answer

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