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Using a sixteen-sided number cube, what is the probability that you will roll an even number or an odd prime number? The number 1 isn't an odd prime. Round to three decimals.

Chelsea Hayes

in Mathematics

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Heather Maxwell on January 17, 2018

1. Let a: get an even number, b: rolling an odd prime number 2. a={2, 4, 6, 8, 10, 12, 14, 16}, b={3, 5, 7, 11, 13}3. Then n(a)=8, n(b)=5 , n(Sample Space)=n(S)=164. Since a and b are mutually exclusive events, which means they have no common elements, P(a or b)=P(a)+P(b)=


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