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What is the probability that if you draw 5 marbles from the jar without replacement 3 are red?
Wiki User
∙ 12y ago
That depends on how many marbles are in the jar, and what colours they are. You could have 999,997 black marbles and 3 red ones, which would make the chance of drawing one red marble, quite literally, one in one million.
As an interesting aside, as the number of non-red marbles grows, the probability of drawing a red one gets infinitely closer to (but never reaches) zero, assuming there is at least one red marble. This is an example of something from calculus, which becomes quite useful in thinking about some kinds of things.
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Wiki User
∙ 12y ago
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If you have a bag of 4 red and 4 green marbles what is the probability of drawing 2 marbles without replacement and getting 2 green marbles?
4/8 or 1/2(probability of first draw) * 3/8(probability of second draw which is 12/64 or 3/16 of the given scenario.
What is the probability of drawing a diamond from a normal deck of cards?
If you draw 40 cards without replacement the probability is 1! If you draw just one, the probability is 1/4.
What is the probability of drawing a heart in a deck of cards?
The probability, if you draw 40 cards, without replacement, is 1. That is, it is a certainty. The probability on a single random draw is 1/4.
What is the probability of choosing a face card of a jack or queen or king on the second draw if the first draw was a ace without replacement?
The probability of drawing a jack, queen, or king on the second draw if the first draw was an ace (without replacement) is (4 + 4 + 4) in (52 - 1) or 12 in 51, which is 4 in 17, or about 0.2353.
A box contains 8 green marbles 4 red marbles and 4 purple marbles if you draw a marble at random what is the probability that you will not draw a red marble?
Probability of drawing a red marble = 4/16 = 1/4 Probability of drawing not a red marble = 1 - 1/4 = 3/4
If you have a bag of 4 red and 4 green marbles what is the probability of drawing 2 marbles without replacement and getting 2 green marbles?
4/8 or 1/2(probability of first draw) * 3/8(probability of second draw which is 12/64 or 3/16 of the given scenario.
A bag contains 3 blue marbles and 4 red marbles. What is the probability that three randomly drawn marbles without replacement will all be red?
The probability of drawing 3 red marbles in a row from a bag of 3 blue and 4 red marbles without replacement is right at about 0.11 or about 11 in 100, if you want odds.Remember that probability is a pure number between zero (no chance - it's impossible) and 1 (it will happen - it's a certainty). A probability of 0.5 is a 50-50 shot, like a coin toss. We good? Let's move on.We have 7 marbles, and there is a 4 in 7 shot of getting a red marble in the first draw. There is a 3 in 6 shot the next draw since now we only have 6 marbles total (NO replacement) and only 3 red ones (we already drew a red one out). Similarly, there is a 2 in 5 shot of getting a third red one if the first two are red. The probability of the first action (getting a red marble on the first draw) is 4/7 or a probability of about 0.5714. Second draw, it's 3/6 or a probability of 0.5. Last, it's 2/5 or a probability of 0.40. To find the intersection of these probabilities, we just multiply them all together, and we'll get right at about 0.011 for a probability.
What is the probability of drawing a diamond from a normal deck of cards?
If you draw 40 cards without replacement the probability is 1! If you draw just one, the probability is 1/4.
What is the probability of drawing a heart in a deck of cards?
The probability, if you draw 40 cards, without replacement, is 1. That is, it is a certainty. The probability on a single random draw is 1/4.
What is the probability of choosing a queen on the second draw if the first was a queen without replacement?
If 1 queen was drawn out of the 52 card deck without replacement, the probability of choosing a queen on the 2nd draw is 3/51 or 1/17.
There are 6 red marbles 8 blue marbles and 11 green marbles in a bag. What is the probability that you will randomly draw either a red or a blue marble?
The probability is 0.56
What is the probability of choosing a face card of a jack or queen or king on the second draw if the first draw was a ace without replacement?
The probability of drawing a jack, queen, or king on the second draw if the first draw was an ace (without replacement) is (4 + 4 + 4) in (52 - 1) or 12 in 51, which is 4 in 17, or about 0.2353.
What are the odds of drawing a diamond from a ordinary deck of cards?
The probability, if you draw 40 cards, without replacement, is 1. That is, it is a certainty. The probability on a single random draw is 1/4.
If a box contains 4 red marbles seven white and 5 blue and two marbles are drawn one at a time with replacement What is the probability that both marbles are white?
Since the box contains 16 marbles, seven of them white, then the probability of drawing one white marble is 7/16. If you replace the marble and draw again, the probability of drawing another white marble is still 7/16. The net probability of drawing two white marbles, while replacing the first, is 49/256.
A box contains 8 green marbles 4 red marbles and 4 purple marbles if you draw a marble at random what is the probability that you will not draw a red marble?
Probability of drawing a red marble = 4/16 = 1/4 Probability of drawing not a red marble = 1 - 1/4 = 3/4
If you have 5 blue marbles 3 red marbles and 7 yellow marbles what is the probability of not getting a yellow if you draw one of them out of a sack?
5 becaese you will get blue
What is the probability of getting a black 4 out of a 52 deck of cards?
If you pick enough cards, without replacement, the probability is 1. The probability for a single random draw is 1/26.
