Question

What is the solution set of {x | x < -3} ∩ {x | x > 5}?
all numbers except -3 and 5
the numbers between -3 and 5
the empty set
all real numbers

Answer 1

it reads,

All x such that x is less than -3
union
all x such that x is greater than 5

Are there any number that are both less than -3 and greater than 5?

Answer 2

oh wait, thats not union. blah. my notation is horrid

Answer 3

the empty set