Assuming that you are using a full deck of playing cards, excluding Jokers, there would be four 3s in a deck of fifty-two total cards, making your chances of drawing a 3 the first time 1:13. However, to draw two 3s in a row in a true random scenario, we start with the condition that you have already drawn your first 3 (the 1:13 chance). Going from here, we would then have another 1:13 chance of drawing a 3, so we simply multiply the two ratios to arrive at a probably of 1:169.
The probability of picking a black ace in one random draw from a normal pack of playing cards is 1/26.
If picked at random, the answer is 2/11.
The probability that a single card, drawn at random, is a 9 is 1/13.
If the person is picked at random, the the probability is 3/7.
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.
The probability of picking a black ace in one random draw from a normal pack of playing cards is 1/26.
The answer depends on how many are picked,whether they are returned after picking and whether the picking is done at random. In a single random selection the probability is 17/25.
If picked at random, the answer is 2/11.
4/52
On one random draw, the probability is 2/13.
The probability that a single card, drawn at random, is a 9 is 1/13.
It is 3/13.
It is 1/4.
The probability, in a single random selection, is 1/20 or 0.05
For a single card, picked at random from a well shuffled normal pack the probability is 3/13.
If you pick enough cards, the probability is 1. For a single card, picked at random, the probability is 1/13.
The probability that a random card picked from a standard pack is a Jack is 1/13.