Number of ways it can happen.
Marbles in a bag probability.
4 are blue and 1 is red.
Change the problem such that the number of green marbles is a two digit number.
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.
Marbles in a bag 2 blue and 3 red marbles are in a bag.
Number and color of marbles in the bag replacement rule.
There are 55 marbles 25 of which are not red.
The sample space for the second event is then 19 marbles instead of 20 marbles.
The probability that the second marble is red is 18 39.
5 there are 5 marbles in total.
This is called probability without replacement or dependent probability.
What are the chances of getting a blue marble.
The probability the first marble you pick is red is of course 19 40.
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So the next time.
A bag contains contains 20 blue marbles 20 green marbles and 20 red marbles 1 probability.
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.
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.
Now there are 38 marbles left and 17 are red.
4 there are 4 blues total number of outcomes.
If we got a red marble before.
Now there are 39 marbles left and 18 are red.
What is the probability that a blue marble gets picked.
Number of marbles in bag if equal probability of drawing same and different color balls.