Reflexive means, If A links B, then B links A, Every item links to itself, If A links B and B links C, A links C, No self-links, What does Symmetric means, Every item links to itself, If A links B, then B links A, If A links B and B links C, A links C, Only one-way links, Set {1,2}. R = {(1,1), (2,2), (1,2), (2,1)}. Is R reflexive?, Yes, No, The relation R = {(1,2), (2,3)} on {1,2,3} is, Reflexive, Symmetric, Transitive, None of these, A relation that is reflexive, symmetric, and transitive is called, Partial order, Equivalence relation, Strict order, Function, Set {1,2}. R = {(1,1), (2,2), (1,2), (2,1)}. What is R?, Reflexive only, Reflexive + symmetric, Equivalence relation, Partial order, Set {1,2,3}. R = {(1,1), (2,2), (3,3)}. What are the Properties?, Reflexive + symmetric + transitive, Symmetric only, Transitive only, None, Consider the relation R={(1,2),(2,4),(3,4)}. Which statement is correct?, R is a one-to-one function, R is a many-to-one function, R is not a function, R is a racist, Which of the following relations is not a function?, {(1,2),(2,3),(3,4)}, {(1,2),(1,3),(2,4)}, {(2,5),(3,6),(4,7)}, {(6,7),(6,9),(7,6)}, Let 𝑅 be an equivalence relation on a finite set 𝐴. Suppose exactly one equivalence class has odd cardinality, and all others have even cardinality. which statement is true, ∣A∣ is even, ∣A∣ is odd, ∣A∣ can be odd or even, what?.

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