If events A and B are independent, and the probability that event A occurs is 83%, what must be true?
1 answer:
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Answer: (D)
Explanation:
Just a note on writing down these expressions: I recommend using parentheses whenever you can to avoid misinterpretation. An expression 1/x-1/y / 1/x+1/y could be interpreted by someone as 1/x-(1/y / 1/x)+1/y, which is a different thing.
