A Box Contains 2 Red Marbles And 8 Blue Ones

John picks up two marbles at a random from the the bag.

A box contains 2 red marbles and 8 blue ones.

A marble drawn at random from one of the boxes turns out to be blue. The following experiment is done a hundred times. So there are going to be 14 minus 2 which is 12 non blue marbles. Well there s a couple ways to think about it.

The red box contains four red marbles and one blue marble and the blue box contains five blue marbles and three red marbles. A box contains 2 red marbles and 98 blue ones. Answer by robertb 5567 show source. These are clearly all yellow.

So this is all the possible outcomes. Mc011 1 jpg what is the probability of drawing a red marble out of the bag without looking. There s two green marbles in the bag. There s two red marbles in the bag.

And then there s one blue marble in the bag. A marble is randomly drawn from one of the boxes its color. So i could pick that green marble or that green marble. 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. 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. So i could pick that red marble or that red marble. What is the probability that it came from the first box.

A box contains 7 red marbles 5 blue marbles and 8 green marbles. There s one blue marble. Mc011 2 jpg mc011 3 jpg mc011 4 jpg mc011 5 jpg. So how many non blue marbles are there.

Asked by will on march 30 2019. Draws are made at random with replacement. A box contains 3 blue and 2 red marbles while another box contains 2 blue and 5 red marbles. Explain and justify each step carefully.