Math Questions - College Level

The sets F and H are defined as follows.

F = {z|z<4}

H= {z|z≥9}

What is the answer?

F ∩ H =

F υ H =

a) (□,□)

b) [□,□)

c) [□,□]

d) Ø

e) □ u □

f) ∞

g) -∞