There s one blue marble.
A bag of marbles contains 12 red marbles 8 blue.
A bag contains eight green marbles and four blue marbles.
Another marble is taken from the bag.
The problem asks for the probability of rr or bb.
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.
A marble is taken at random and replaced.
Solution for a bag contains 7 red marbles 6 white marbles and 8 blue marbles.
So i could pick that red marble or that red marble.
There s two green marbles in the bag.
There s two red marbles in the bag.
You have an 8 12 2 3 chance of picking a green marble the first time and a 4 12 1 3 chance of not picking green the first time.
Total number of marbles in the bag is 3 4 7.
A bag contains eight green marbles and four blue marbles.
You draw 3 marbles out at random without replacement.
These are clearly all yellow.
Two consecutive draws are made from the bag without replacement of the first draw.
A bag contains 3 red marbles and 4 blue marbles.
There are 55 marbles 25 of which are not red p getting a color other than red p 25 55 455 probability of this happening 3 times in a row is.
Given that you have bb.
A bag contains 3 red marbles 5 green marbles and 2 blue marbles.
You have 8 6 4 18 marbles each assumed to have a 1 18 probability of being drawn.
So this is all the possible outcomes.
So i could pick that green marble or that green marble.
And then there s one blue marble in the bag.