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Damm [24]
3 years ago
14

Can someone help me solve A and B? I'm confused:(

Mathematics
1 answer:
IceJOKER [234]3 years ago
3 0
P(a or b)= p(a)+p(b)-p(a and b)
0.7=0.6+p(b)-0.3
p(b)=0.4

p(a or b)= p(a)+p(b)-p(a and b)
              =0.6+0.4-0.3
               =0.7
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