Question

Let A = {1, 3}. Write out the subset of A × A defined by the ≤ relation on A. (Enter your answers as a comma-separated list of ordered pairs.)

Answer 1

hmm not sure about this, because 1<=3 but 3>1.

Answer 2

so I guess
{(1,1),(3,3)}

Answer 3

ok, almost had it. its actually {(1, 1), (3, 3), 1, 3)}

Answer 4

{(1, 1), (3, 3), (1, 3)}