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