A Box Contains 2 Red Marbles And 8 Blue Ones

There s two green marbles in the bag.

A box contains 2 red marbles and 8 blue ones. So i could pick that green marble or that green marble. 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. Well there s a couple ways to think about it. A box contains 3 blue and 2 red marbles while another box contains 2 blue and 5 red marbles.

A box contains 2 red marbles and 98 blue ones. Answer by robertb 5567 show source. A marble is randomly drawn from one of the boxes its color. Mc011 1 jpg what is the probability of drawing a red marble out of the bag without looking.

The following experiment is done a hundred times. Draws are made at random with replacement. A bag contains 1 blue 2 green 3 yellow and 3 red marbles as shown. 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.

Asked by will on march 30 2019. There are two boxes. So this is all the possible outcomes. What is the probability that it came from the first box.

So i could pick that red marble or that red marble. So how many non blue marbles are there. And then there s one blue marble 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.

There s one blue marble. So there are going to be 14 minus 2 which is 12 non blue marbles. Explain and justify each step carefully. There s two red marbles in the bag.

Another way to think about it is a red or green marble because the only other two colors we have are red and green. You could say there s 14 total marbles. John picks up two marbles at a random from the the bag. These are clearly all yellow.