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The probability is 11/21.

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โˆ™ 2012-01-11 00:49:16
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Q: What is the probability of picking even numbers from 20 to 40?
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Related questions

What is the probability of picking a prime number from numbers between 1 and 20?

The probability is 8/20.


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


What is the probability of picking 3 from 20 in fraction form?

The probability of picking a distinct set of 3 numbers from 20 is1/[20!/(3!)(17!)]= 1/1140The probability of only picking 3 from 20 is1/20


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 picking an s from HOUSE?

A 1 out of 5 chance, or 20%


What is the probability that your friend will pick a 15 or a 16 from 1 to 20?

The probability of picking a 15 or a 16 from the random set [1-20] is 2 in 20, or 1 in 10, or 0.1.


What is the probability of guessing a 4 digit code with numbers 1 to 5?

The probability is 1 over 20.


What is the pribability of picking a even number between 1-20?

21


If a number is chosen at random from the numbers 1 to 20 inclusive what is the probability a prime will be picked?

There are 8 out of 20 numbers that are prime, so 8/20, or 2/5.


What is the theoretical probability of getting a prime number if you randomly pick a number from 20 through 39?

There are 20 numbers from 20 through 39, and 4 of them are prime (23, 29, 31, 37), the probability is 4 in 20 or 0.20.


What is the probability number is perfect square from 10 to 20?

There are 11 numbers from 10 to 20 if we include 10 and 20. Of those, only 16 is a perfect square. So the probability if 1/11 or .09 repeating.


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%.


How many even numbers between 10 and 20?

the even numbers between 10 and 20 are :10,12,14,16,18,20 so there are 4 even numbers between 10 and 20 (without counting the 10 and 20 =)) i hope this helped u =)


The numbers 1 to 20 are placed on a deck of 20 cards What is the probability of drawing a 4 and then 7?

1/400


A bag contains 3 red marbles 5 blue marbles 8 yellow marbles and 4 black marbles what is the theoretical probability of randomly picking each color marble?

The theoretical probability of randomly picking each color marble is the number of color marbles you have for each color, divided by the total number of marbles. For example, the probability of selecting a red marble is 3/20.


What is the probability of having an even card from a deck of 52?

20 out of 52.


What is the probability of selecting a red even card in a deck of 52?

The probability of selecting a red card is 26 in 52 or 1 in 2. The probability of selecting an even card is 20 in 52 or 5 in 13. The probability, therefore, of selecting a red even card is 1 in 2 times 5 in 13 or 5 in 26.


If a number from 1 to 20 is chosen what is the probability of getting 7?

1 out of 20 this is because there are 20 numbers in total, and there is only one 7 in there. (Assuming that there is the same probability for each number to be chosen, and that 17 is excluded as an affirmative outcome)


If a bag contains 20 chips labeled with the numbers 1 through 20 and one chip is selected at random. what is the probability that the chip has the number 17 on it?

The probability of selecting a 17 (or any number for that matter) is 1/20 or .05 or 5%.


How many even numbers in a deck of 52 cards?

20 even numbers


What would be the chance of picking a multiple of 2 from a deck of cards?

If one card is picked at random from a normal deck of cards, the probability is 20/52 or 5/13.


How do you find the odd of picking a green marble 3 yellow 4 blue 6 green and 7 pink marbles?

The probability, in one draw, is 6/20 or 30%


Can two numbe215r have 20 as their HCF and 215 as their LCM?

No. If two numbers have an even factor in common, they are even numbers. Two even numbers will have an even LCM.


What 2 even numbers are prime numbers of 20?

The only even prime number is 2. It happens twice in the prime factorization of 20.


What is the probability of picking 20 red marbles out of a bag with 50 marbles where only 20 of them are red and the rest are blue?

it's 20/50 times 19/49 times 18/48 tmes 17/47 etc down to 1/31