If the probability that event A will not happen is 0.7 and the probability that event B will not happen is 0.5, what is the probability that either event A or event B will occur, given that both events cannot happen at the same time?

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Official Explanation

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We know that the probability that event A will not occur is 0.7 and the probability that event B will not occur is 0.5. To find the probability that either event A or event B will occur, we first calculate the probabilities of each event occurring. The probability that…

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Comments

ChandanJul 11, 2024

thanks for the answer

OscarOct 22, 2024

thanks for posting

What this question tests

What it tests

Your ability to compute probabilities of single and compound events, including 'at least one' questions.

Common trap

Forgetting to use the complement for 'at least one', or treating dependent events as independent.