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If a number is chosen randomly from the numbers {1,2,3,4, …,20}, find the probability of getting a composite number

If a number is chosen randomly from the numbers {1,2,3,4, …,20}, find the probability of getting a composite number
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8 votes
If a number is chosen randomly from the numbers {1,2,3,4, …,20}, find the probability of getting a composite number

User Oleksandr H
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1 Answer

14 votes


|\Omega|=20\\A=\{4,6,8,9,10,12,14,15,16,18,20\}\\|A|=11\\\\P(A)=(11)/(20)=55\%

User Bobby Ortiz
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