lashaaungas
24.06.2020 •
Mathematics
If P(A)=0.4, P(A and B)=0.2,and P(A or B)=0.5, What is P(B)
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Ответ:
Step-by-step explanation:
Hi,
We know that
P(A or B)=P(A)+P(B)-P(A and B)
so P(B)= P(A or B) - P(A) + P(A and B)
so
P(B) = 0.5 - 0.4 + 0.2 = 0.3
thanks
Ответ: