Which of the following has no solution? {x | x 0} {x | x ≤ 0} and {x | x ≥ 0} {x | x ≤ 0} or {x | x ≥ 0}

Question

Which of the following has no solution?

{x | x < 0} and {x | x > 0}
{x | x ≤ 0} and {x | x ≥ 0}
{x | x ≤ 0} or {x | x ≥ 0}

anonymous · Answer

@jigglypuff314

anonymous · Answer

i just don't understand the difference in more  and more OR equal to when it comes to this problem

anonymous · Answer

i dont think it would make a difference would it?

jigglypuff314 · Answer

that would be if they *include* the 0 or if they do not
for this problem that is all the difference you need to find the answer

Have you tried graphing the options they gave? :)

anonymous · Answer

no i dont know how to... Sorry

jigglypuff314 · Answer

Let's first draw a number line :)|dw:1431693877098:dw|

anonymous · Answer

oh is this gonna be something to do with the circle being open or closed?

anonymous · Answer

A?

jigglypuff314 · Answer

yes, that's correct ^_^
because it is the only one that does not include the 0 :)

anonymous · Answer

did you just type an reply then delete it?

anonymous · Answer

because i saw it then it was gone... LOL

anonymous · Answer

And Thx JigglyPuff314

jigglypuff314 · Answer

yeah, openstudy was loading weird for me :-/

and I'm glad I could help ^_^