# A and B are two events. P(A)=0.25 , P(B)=0.5 and P(A and B)=0.15 . What is the value of P(A or B) ?

###### Question:

A and B are two events.
P(A)=0.25 , P(B)=0.5 and P(A and B)=0.15 .
What is the value of P(A or B) ?

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