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A bag contains 9 marbles 2 green 3 blue and 4 red what is the pobability of picking a green then a non-green?
Wiki User
∙ 14y ago
Short answer: 14/81
There is a 2/9 chance of picking a green marble the first time.
Since this leaves 8 marbles (only one of which is green; you took the other one), that leaves an 7/8 chance of picking any other colour the second time.
To find the overall probability, you simply multiply the two values (2/9 * 7/8 = 14/81). This is simple to understand. You can only get a green marble every 2 out of 9 tries. For each of these 2 times, you have a 7/8 chance of getting a different colour the second time. So, you have a 7/8 chance every 2/9 times. Simply multiply them to get the total number of possibilities.
Wiki User
∙ 14y ago
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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.
A bag contains 3 blue marbles 7 red marbles and 5 yellow marbles If Joe picks 1 marble from the bag at random what is the probability that it will be blue?
1 in 15 chances that the marble will be blue, because there are 15 marbles all together in a bag, and you are only picking one out of it.
If you have 6 red marbles 3 yellow marbles and 5 green marbles in a bag what is the probability of picking a blue marble out?
0No blue marbles in the bag.
What is the probability of picking a red marble and then a blue marble?
None, if all the marbles that you have are yellow!
There is a bag of marbles 10 are red 15 are purple and 25 are yellow what is the probability of picking a purple marble?
3/10 or 0.3 is the probability of picking a purple marble.
What is the probablility of picking a green marble at random from a box that contains only 11 blue marbles?
The probability of picking a green marble from a box that only contains blue marbles is zero.
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.
A bag contains five green marbles and four red marbles what is the odds of in favor picking a green marble on the first selection?
There is a one in 2 chance of getting a green marble.
A bag contains 4 red marbles and 5 blue marbles If two marbles are chosen at random what is the probability of getting two red marbles?
1/6Because:There is a 4 in 9 chance of picking a red ball the first time and 3 in 8 chance of picking a red ball the second time. The chance of picking two reds as the first two balls is 4/9 x 3/8 or 12/72 or 1/6
A bag contains 3 blue marbles 7 red marbles and 5 yellow marbles If Joe picks 1 marble from the bag at random what is the probability that it will be blue?
1 in 15 chances that the marble will be blue, because there are 15 marbles all together in a bag, and you are only picking one out of it.
A bag contains 6 orange 7 green and 8 yellow marbles Find the probability of picking 3 yellow marbles if each marble is returned to the bag before the next marble is picked?
1 in 7
If you have 6 red marbles 3 yellow marbles and 5 green marbles in a bag what is the probability of picking a blue marble out?
0No blue marbles in the bag.
What is the probability of picking a red marble and then a blue marble?
None, if all the marbles that you have are yellow!
How do you Write a combination problem and solve it?
A combination problem essentially asks for two answers from different mathematical areas. A simple example could be, "A boy has a bag of marbles. Four marbles are blue. Three marbles are red. Five marbles are white. How many marbles does he have all together? What are the chances of picking a blue marble at random?" The two areas being addressed are simple addition and probability. There are a total of 12 marbles. There is a 1:3 chance of picking a blue marble at random.
A bag has 7 blue marbles and 8 purple marbles.What is the probability of picking a blue marble then a purple marble without replacing?
7/15 for blue marbles and 8/14 for the purple marbles this is dependent probability
What is the probability of picking a blue marble from a bag of 4 red marbles 6 blue marbles and 1 white marble?
11 marbles total and 6 are blue so probability is 6/11
42 red marbles 17 green marbles 27 blue marbles what is the experimental probability of picking a green marble?
if you pick one marble at random, the odds are 17/(42+17+27) or 17/86 or about 20%
