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The probability is 8/20.

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โˆ™ 2011-08-10 13:15:58
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Q: What is the probability of picking a prime number from numbers between 1 and 20?
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Related questions

What is the probability of picking a number from a population of b numbers?

The probability is 1/b.


Is the probability of picking a prime number between 1-49 greater than picking a number that is not prime?

no.


What are the chances of for the probability 2 to 5?

The chances of picking a number between 2 to 5 is 4/10 if the numbers to be picked from are 1-10. However, if the numbers to be picked from are 1-100, then the probability drops to 4/100.


What is the probability of the choosing a prime number?

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.


What is theoretical probability of picking 2 squared numbers out of 15?

The answer depends on whether the first number is replaced before picking the second. If not, the probability is 0.029


What is the probability of picking up number 15 from 1 to 20 numbers?

The probability, in a single random selection, is 1/20 or 0.05


How do you find probability if two numbers are given?

2 numbers. few probabilities. Lets see. Number 1 probability: if your given numbers are this for example, 2 and 7. What is the probability of picking out 7? the Numerator is how many of that number is in the group. They are asking for 7? so how many 7's are in the group? 1. Then the denominator is how many numbers are in the group. There are 2 numbers in the group. so the probability of picking out a 7 would be 1/2. get it? if there were two 7's, then the probability would be 2/2 or 1. I hope I helped.


What is the probability of winning the lottery on 1 ticket by picking 6 number out of numbers 1-49?

It is 1/13,983,816.


Is the probability of picking a prime number greater than picking a number that is not prime?

no. because there are more composite numbers than prime numbers It depends on the place you choose to pick the prime number (e.g. 457 or 7577?). The bigger the number the less likely it is a prime.A formula gives the probability for a number being prime (Prime Number Theorem).


What is the probability of winning the lottery on 1 ticket by picking 5 numbers out of numbers 1-50?

The number of combinations of 50 things taken 5 at a time is (50! - 45!) / 5! or 2,118,760, so the probability of winning the lottery on 1 ticket by picking 5 numbers out of 50 numbers is 1 in 2,118,760, or 0.00000047197. More formally, the number of combinations of N things taken P at a time is (N! - (N-P)!) / P!


What is the probability that you pick an odd number at random from 75 to 100?

From 75 to 100 (inclusive), there are 26 numbers, and 13 of them are odd.The probability of picking an odd number is 13/26 = 50%.


Can someone help with a probability problem I need to calculate the probability of winning the Mega Million jackpot. First you must choose the correct 5 numbers between 1 and 56. I believe that solu?

I need to calculate the probability of winning the Mega Million jackpot. First you must choose the correct 5 numbers between 1 and 56. I believe that solution is 56!/51! 5! or The probability of 1/3,819,816 The next step is, in a separate single drawing, choose the correct number between 1-46. So there is a 1/46 chance of picking that number. is the probability of choosing all numbers 1/3,819,816 x 1/46?


What is the probability of getting two adjacent numbers out of 80?

If two people pick a number from 1 to 80, then there are 79 possible adjacent pairs that these numbers could go in. For each of these pairs, there are two options (one with person a picking the lower number and one with person b picking the lower number). Thus there are 158 possible pairs. The chance that person 1 will pick any given number is 1/80. The chance that person two will pick any given number is 1/80. Thus the probability that they have picked adjacent number is (1/80)2x158 = 0.0246875


What is the probability of picking a 5 in a dice?

The probability of any one number on a die being rolled is 1/6 or 16.67%.


Probability can be defined as a between the number of?

Between the numbers of 0 and 1, 0 being never and 1 being definite


On a wheel numbered from 1 to 8 what is the probability of picking a number factor greater than 10?

If the only numbers to pick from are 1 through 8, how can you get a factor greater than 10?


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.


There are 4 numbers the probability of spinning the number 3 is what?

The probability of spinning the number 3, or any number, is 1/4 or 0.25 since there is 4 numbers total.


What is the probability of picking odd numbers from 1 to 20?

Since there are 10 odd numbers (1, 3, 5, 7, 9, 11, 13, 15, 17, 19) in the 20 numbers (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20), the probability of picking an odd number in a random sample is 10 in 20, or 1 in 2, or 0.5.


What is the probability of selecting a number less 1000 between 1 6344?

In the range of 1 - 6,344 there are 6,344 numbers, and 999 of therm are less than 1,000.So, if the numbers are completely scrambled and shuffled and put into a bag, andyour selection is completely random with your eyes closed and one hand behind yourback, then the probability of picking a number less than 1,000 is999/6,344 = 15.747% (rounded)


What is the probability of picking white?

The probability of picking white is equal to the number of white objects divided by the total number of objects (both white and non-white), assuming that all of the objects are identical other than color. In Geometry, the probability of landing on a white space is the area of the white space divided by the total area.


In a deck of 52 cards there are two jokers and four each of the number cards one over ten The probability of picking a joker is two out of 52 our two52Write as a fraction the probability of drawin a 7?

in a deck of 52 cards there are two and four each of the number cards one over ten the probability of picking a joker is two out of 52 our two 52 write as a fraction the probability of drawin a 7


What is the probability that the difference of the numbers is 6 in two number cubes?

The probability is 0.


What is the probability of picking an odd number greater than 3 out a pack of cards?

It is 3/13.


If two numbers are complementary what is their probability?

On the basis that numbers are a continuous variable, the probability of any particular number (or pair) is 0.