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Although there are infinitely many primes, they become rarer and rarer so that as the number of numbers increases, the probability that picking one of them at random is a Prime number tends to zero*.
In the first 10 numbers there are 4 primes, so the probability of picking one is 4/10 = 2/5 = 0.4
In the first 100 numbers there are 26 primes, so the probability of picking one is 25/100 = 1/4 = 0.25
In the first 1,000 numbers there are 169 primes, so the probability of picking one is 168/1000 = 0.168
In the first 10,000 numbers there are 1,229 primes, so the probability of picking one is 0.1229
In the first 100,000 numbers there are 9592 primes, so the probability of picking one is 0.09592
In the first 1,000,000 numbers there are 78,498 primes, so the probability of picking one is 0.078498
In the first 10,000,000 numbers there are 664,579 primes, so the probability of picking one is 0.0664579
* Given any small value ε less than 1 and greater than 0, it is possible to find a number n such that the probability of picking a prime at random from the numbers 1-n is less than the given small value ε.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoThe answer will depend on what numbers you can select from.
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A fair die is thrown What is the probability that a prime number will occur?
When a fair die is thrown the probability that a prime number will occur is 2:1
What are odds of throwing a prime number with a dice?
The probability of eventually throwing a prime number is 1. On a single throw, of a fair die, the probability is 1/2.
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The probability is 8/20.
What is the probability of choosing a letter from the word probability?
Since the word "probability" contains only letters, then the probability of choosing a letter from the word "probability" is 1, i.e. it is certain to happen.
What is the probability of choosing neither an odd number nor prime number from 1 to 50?
24/50
What is the probability to choose prime numbers from 1 to 9?
The prime numbers from one to nine are 2, 3, 5, and 7. There are nine numbers from one to nine. The probability is 4 (the number of prime numbers) over 9 (the total number of numbers). Therefore, the probability of choosing a prime number is 4/9 or about 44 percent.
What is the probability of getting 2 prime nos from 1 to 20?
In the sample space [1,20], there are 8 prime numbers, [2,3,5,7,11,13,17,19]. The probability, then, of randomly choosing a prime number in the sample space [1,20] is (8 in 20), or (2 in 5), or 0.4. The probability of choosing two of them is (8 in 20) times (7 in 19) which is (56 in 1064) or (7 in 133) or about 0.05263.
A number is chosen at random from the first 20 positive whole numbers What is the probability that it is not a prime number?
There are 12 composite (and 8 primes) in the first twenty whole numbers. So the probability of randomly choosing a non-prime is 12/20 or 60%.
What is the probability of choosing an odd number?
If you have an equal amount of odd and even numbers in a determined sample space, the probability of choosing and odd number is 1/2 (.5).
What is the probability of rolling a prime number or non prime number?
Half
What is the probability of choosing a person?
1 / total number of people
A fair die is thrown What is the probability that a prime number will occur?
When a fair die is thrown the probability that a prime number will occur is 2:1
If you roll a die what is the probability of rolling a prime number?
"The probability of getting a prime number in a die is 4/6" Actually there are 3 prime numbers on a die. 2, 3, and 5 are all prime numbers. So this tells you that you have 3 chances it will be a prime number and 3 chances it will not be a prime number. So the probability of getting a prime number on a die would be 3/6 or 1/2.
What are the odds against choosing a prime number or a number divisible by 9?
prime umber
What is the probability of getting at least one prime number in two dice?
The probability of getting at least one prime number in two dice is 3/4.
What are odds of throwing a prime number with a dice?
The probability of eventually throwing a prime number is 1. On a single throw, of a fair die, the probability is 1/2.
