Well there s a couple ways to think about it.
A box contains 2 red marbles and 8 blue ones.
What s the fewest number of draws i have to make in order to have better than a 70 chance for a red marble to appear at least once.
Another way to think about it is a red or green marble because the only other two colors we have are red and green.
There are two boxes.
There s one blue marble.
So i could pick that green marble or that green marble.
So i could pick that red marble or that red marble.
John picks up two marbles at a random from the the bag.
Asked by will on march 30 2019.
There s two green marbles in the bag.
Mc011 2 jpg mc011 3 jpg mc011 4 jpg mc011 5 jpg.
These are clearly all yellow.
Explain and justify each step carefully.
A box contains 2 red marbles and 98 blue ones.
What is the probability that it came from the first box.
Mc011 1 jpg what is the probability of drawing a red marble out of the bag without looking.
Answer by robertb 5567 show source.
What is the probability that john has picked a pair of matching marbles a 1 19 b 15 90 c 7 19 d 59 190 e 2 190.
There s two red marbles in the bag.
The red box contains four red marbles and one blue marble and the blue box contains five blue marbles and three red marbles.
You could say there s 14 total marbles.
A bag contains 1 blue 2 green 3 yellow and 3 red marbles as shown.
A marble is randomly drawn from one of the boxes its color.
Draws are made at random with replacement.
So this is all the possible outcomes.
A box contains 7 red marbles 5 blue marbles and 8 green marbles.
A marble drawn at random from one of the boxes turns out to be blue.
So how many non blue marbles are there.
The following experiment is done a hundred times.