Q: What is the probability of picking even numbers from 20 to 40?

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

A 1 out of 5 chance, or 20%

20 out of 52.

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

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

Related questions

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

The probability is 8/20.

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

A 1 out of 5 chance, or 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.

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.

The probability is 1 over 20.

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

21

1/400

20 out of 52.

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.