a) c, b ,f b) a, b, c c) , f , c d)a, c, e incorrect thank you! (1 point) Given

Question

a) c, b ,f

b) a, b, c

c) , f , c

d)a, c, e

incorrect

thank you!

(1 point) Given the following relations on the set of all people. Check ALL correct answers from the following lists: (a) A is older than B A. antisymmetric B. asymmetric C. irreflexive D. reflexive transitive (b) A is a parent of B A. irreflexive B. transitive C. asymmetric D. reflexive E. antisymmetric symmetric (c) A has the same first name asB A. irreflexive B. reflexive C. antisymmetric transitive (d) A is currently at least 100 miles away from B D A. reflexive B. irreflexive C. symmetric D. asymmetric E. transitive F. antisymmetric

Explanation / Answer

(a) A is older than B.

A. Antisymmetric (If A is older than B, B is not older than A)

C. Irreflexive ( A is not older than A)

F. Transitive (If A is older than B and B is older than C, then A is oldder than C)

(b) A is a parent of B.

A. Irreflexive (A is not a parent of A)

E. Antisymmetric (A is a parent of B but B is not a parent of A)

(c) A has the same first name as B.

This means both A and B are related to each other by same first name.

B. Reflexive

E. Symmetric

F. Transitive

(d) A is currently 100 miles away from B

B. Irreflexive ( A is not away from iself)

C. Symmetric ( A is 100 miles away from B then B is also 100 miles away from A)

E. Transitive

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