Question

Define a relation on Z by setting .. See screenshot :)

Answer 1

1 R 2, 2 R 1 but ...

Answer 2

I dont understand..

Answer 3

transitivity is a property that impies: if a relates to b, and b relates to c, then a relates to c

Answer 4

find 3 integers, such that the relation holds for ab, the relation holds for bc, but the relation does not hold for ac

Answer 5

another way to "read" this is: lets define a relationship, R, by "is friends with"

Sally R Ginger, Ginger R Francis, but Sally notR Francis

Answer 6

ok got it so the answer is 1,2,3 thanks :)

Answer 7

1,2,3 is a suitable answer, but not the ONLY answer

Answer 8

any: odd, even, odd run should suffice

Answer 9

ok cool :)