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The odds against a certain event are 5 t...

The odds against a certain event are 5 to 2, and the odds in favour of another event independent of the former are 6 to 5. Find the chance that one at least of the events will happen.

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CENGAGE PUBLICATION-PROBABILITY-All Questions
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  14. A coin is tossed three times. Event A: two heads appear Event B: last ...

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