And-or probabilities

P(A ) = 0.53, P(B) = 0.15, and P(A n B ) = 0.18. Find P(A U B ). Round approximations to two decimal places.

Correct answer:

p =  0.5

Step-by-step explanation:

PA=0.53 PB=0.15 PAB=0.18  p=PA+PBPAB=0.53+0.150.18=0.5

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