alleryStart learning →P(A)=0.5, P(B)=0.4 and P(A and B)=0.2. Find P(A or B).
A1.0
B0.9
C0.7
D0.6
Answer & Solution
Correct answer: C. 0.7
Addition rule gives 0.5 + 0.4 - 0.2 = 0.7.
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