Probability examples a jar contains 30 red marbles 12 yellow marbles 8 green marbles and 5 blue marbles what is the probability that you draw and replace marbles 3 times and you get no red marbles.
Marbles in a bag probability.
The sample space for the second event is then 19 marbles instead of 20 marbles.
What are the chances of getting a blue marble.
4 there are 4 blues total number of outcomes.
So the next time.
The chance is 2 in 5 but after taking one out the chances change.
4 are blue and 1 is red.
Number and color of marbles in the bag replacement rule.
Using the digits 1 to 9 at most one time each fill in the boxes to make the probability of drawing a red marble from either bag the same.
Probability that at least one out of two marbles will be orange 1 probability that both marbles are blue 1 p first marble is blue p second marble is blue 1 3 5 2 4 7 10 method 2.
Number of marbles in bag if equal probability of drawing same and different color balls.
A bag contains contains 20 blue marbles 20 green marbles and 20 red marbles 1 probability.
5 there are 5 marbles in total.
The probability the first marble you pick is red is of course 19 40.
Marbles in a bag 2 blue and 3 red marbles are in a bag.
If we got a red marble before.
Change the problem such that the number of green marbles is a two digit number.
Now there are 39 marbles left and 18 are red.
This is called probability without replacement or dependent probability.
For example a marble may be taken from a bag with 20 marbles and then a second marble is taken without replacing the first marble.
What is the probability that a blue marble gets picked.
Number of ways it can happen.
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The probability that the second marble is red is 18 39.