A recent U.S. survey was conducted to learn about the behavior of "online adults" - an adult who uses the Internet. This survey revealed that 69% were Facebookusers, 22% used Twitter and 18% used both.

1.What is the probability that a U.S. onlineadult chosen at random uses Facebookor Twitter?

a.0.73

b.0.51

c.0.69

d.0.22

e.0.91

f.0.47

g.0.40

h.0.29

2.What is the probability that aU.S.onlineadultchosenat random doesn't use Facebookor Twitter?

a.0.04

b.0.51

c.0.47

d.0.22

e.0.18

f.0.69

g.0.40

h.0.27

3.What is the probability that a U.S.onlineadultchosen at random uses Facebook only?

a.0.69

b.0.47

c.0.04

d.0.29

e.0.51

f.0.22

g.0.18

h.0.40