Let A={x;x∈R,x≥2} and B={x:x∈R,x<4} Then A∩B=
Let A = {x:x ϵ R,x>4} and B = {x ϵR:x<5}. Then A∩B =
Let A = { x : x ∈ R, |x| < 1}; B = {x : x ∈ R, |x-1| ≥ 1} and
A ∪ B = R - D, then the set D is