Using a sixteen-sided number cube, what is the probability that you will roll an even number or an odd prime number? Round to th ree decimals
1 answer:
When there is a probability this OR that, the individual probabilities are added. probability of rolling an even number is 1/2 prime numbers between 1-16 are {2, 3, 5, 7, 11, 13} of these five are odd. probability of rolling an odd prime number 5/16 probability of even OR odd prime 1/2 + 5/16 8/16 + 5/16 = 13/16 13/16 = 0.825
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