What is the probability that the number is a prime number?

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courageTyro

Asked: December 20, 20202020-12-20T15:36:46+00:00 2020-12-20T15:36:46+00:00In: Statistics and Probability

What is the probability that the number is a prime number?

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A number is selected randomly from the set of integers 1 to 20 inclusive. What is the probability that the number is a prime number?

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Sengemegz · Accepted Answer · 2021-01-02T21:22:56+00:00

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Sengemegz Moderator

2021-01-02T21:22:56+00:00Added an answer on January 2, 2021 at 9:22 pm

Sample space= ${1, 2, 3, 4, 5, 6...20}$
Prime numbers = ${2, 3, 5, 7, 11, 13, 17, 19}$
$\Rightarrow$ P(Prime numbers)= $\dfrac{8}{20}$
$\Rightarrow \dfrac{2}{5}$

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