Question 677478
Make a 3 circle Venn diagram to understand this. 24% don't read any of the 3 newspapers.
a)8
b)(.20+.11)+(.15+.12)=.58
c).09+.11+.03+.12=.35
d).14
e).15+.06=.21
f)
1.00-.35=.65 don't read B
(.15+.06)/65 = 21/65 
g).11+.12+.06=.29
h)(.06+.03)/.36 = 9/36 = 1/4
i)
x=.4, y=.6
7C4*x^4y^3 Binomial formula for exactly 4 of 7.
=35*.00553
=.1935
j)
x=.36, y=.64
y^10+10y^9x Binomial formula for all don't read plus only one reads C.
=.0115+.0649
=.0764
1-.0764=.9236 the probability that at least two of them read Newspaper C.
.
Ed