7. (Relations) Consider the set A = (1,2,3, 4, 5}, and a relation R defined by zRy + 2-y is an integer multiple of 3. (a) List all elements y for which 1Ry is true. (b) Is R reflexive? Justify. (c) Is Rsymmetrie? Justify.

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7. (Relations) Consider the set A = (1,2,3, 4, 5}, and a relation R defined by
zRy - 2-y is an integer multiple of 3.
(a) List all elements y for which 1Ry is true.
(b) Is R reflexive? Justify.
(c) Is R symmetric? Justify.
(d) Is R antisymmetric? Justify.
(e) Is R transitive? Justify.
Transcribed Image Text:7. (Relations) Consider the set A = (1,2,3, 4, 5}, and a relation R defined by zRy - 2-y is an integer multiple of 3. (a) List all elements y for which 1Ry is true. (b) Is R reflexive? Justify. (c) Is R symmetric? Justify. (d) Is R antisymmetric? Justify. (e) Is R transitive? Justify.
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