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

Can someone help me solve A and B? I'm confused:(
asked 167k views
3 votes
Can someone help me solve A and B? I'm confused:(

Can someone help me solve A and B? I'm confused:(-example-1
asked
User Peregrination
by
8.2k points

1 Answer

3 votes
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
answered
User StinkyCat
by
8.0k points
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