Wiedząc że P( A ∩ B )=3/10 , P( A ' )=3/5 , P( A ∪ B )=4/5 . Oblicz P( B )
4/5=2/5+p(B)-3/10
4/5-2/5+3/10=P(B)
4/10+3/10=P(B)
7/10=P(B)
P( A ∩ B )=3/10
, P( A ' )=3/5 P(A)=2/5
, P( A ∪ B )=4/5
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4/5=2/5+p(B)-3/10
4/5-2/5+3/10=P(B)
4/10+3/10=P(B)
7/10=P(B)
P( A ∩ B )=3/10
, P( A ' )=3/5 P(A)=2/5
, P( A ∪ B )=4/5