Proszę o najlepsze rozwiązanie . :) Wiedząc że P(A ∩ B)=3/10 P(A')=3/5 P(A ∪ B)=4/5 oblicz P(B)
P() = P(A) + P(B) - P()
P(B) = P() + P() - P(A)
P(A) = 1 - P(A") = 1 - 3/5 = 2/5
P(B) = 4/5 + 3/10 - 2/5 = 8/10 + 3/10 - 4/10 = 7/10
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P() = P(A) + P(B) - P()
P(B) = P() + P() - P(A)
P(A) = 1 - P(A") = 1 - 3/5 = 2/5
P(B) = 4/5 + 3/10 - 2/5 = 8/10 + 3/10 - 4/10 = 7/10